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Finding the Fourth Proportional to 8,136.76, 11,228.74 and 4,410.76

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Solution

The fourth proportional to 8,136.76, 11,228.74 and 4,410.76 is: 6,086.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.76 : 11,228.74 = 4,410.76 : x
  2. Step 2: Convert to fraction form
    8,136.76/11,228.74 = 4,410.76/x
  3. Step 3: Cross multiply
    8,136.76x = 11,228.74 × 4,410.76
  4. Step 4: Simplify right side
    8,136.76x = 49,527,277.24
  5. Step 5: Solve for x
    x = 49,527,277.24/8,136.76
  6. Step 6: Final answer
    x = 6,086.85

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Find fourth proportional to 4,068.38, 5,614.37 and 2,205.38
Half scale
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Double scale
Find fourth proportional to 8,137.76, 11,230.12 and 4,411.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.