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Finding the Fourth Proportional to 6,144.76, 8,479.72 and 3,491.64

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Solution

The fourth proportional to 6,144.76, 8,479.72 and 3,491.64 is: 4,818.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,144.76 : 8,479.72 = 3,491.64 : x
  2. Step 2: Convert to fraction form
    6,144.76/8,479.72 = 3,491.64/x
  3. Step 3: Cross multiply
    6,144.76x = 8,479.72 × 3,491.64
  4. Step 4: Simplify right side
    6,144.76x = 29,608,133.91
  5. Step 5: Solve for x
    x = 29,608,133.91/6,144.76
  6. Step 6: Final answer
    x = 4,818.44

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Find fourth proportional to 3,072.38, 4,239.86 and 1,745.82
Half scale
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Double scale
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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.