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Finding the Fourth Proportional to 3,451.77, 4,764.08 and 3,240.77

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Solution

The fourth proportional to 3,451.77, 4,764.08 and 3,240.77 is: 4,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.77 : 4,764.08 = 3,240.77 : x
  2. Step 2: Convert to fraction form
    3,451.77/4,764.08 = 3,240.77/x
  3. Step 3: Cross multiply
    3,451.77x = 4,764.08 × 3,240.77
  4. Step 4: Simplify right side
    3,451.77x = 15,439,271.82
  5. Step 5: Solve for x
    x = 15,439,271.82/3,451.77
  6. Step 6: Final answer
    x = 4,472.86

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Find fourth proportional to 1,725.89, 2,382.04 and 1,620.38
Half scale
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Double scale
Find fourth proportional to 3,452.77, 4,765.46 and 3,241.77
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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.