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Finding the Fourth Proportional to 6,472.47, 8,931.51 and 3,639.39

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Solution

The fourth proportional to 6,472.47, 8,931.51 and 3,639.39 is: 5,022.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472.47 : 8,931.51 = 3,639.39 : x
  2. Step 2: Convert to fraction form
    6,472.47/8,931.51 = 3,639.39/x
  3. Step 3: Cross multiply
    6,472.47x = 8,931.51 × 3,639.39
  4. Step 4: Simplify right side
    6,472.47x = 32,505,248.18
  5. Step 5: Solve for x
    x = 32,505,248.18/6,472.47
  6. Step 6: Final answer
    x = 5,022.08

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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.