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Finding the Fourth Proportional to 6,472.61, 8,929.65 and 3,639.32

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Solution

The fourth proportional to 6,472.61, 8,929.65 and 3,639.32 is: 5,020.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,472.61 : 8,929.65 = 3,639.32 : x
  2. Step 2: Convert to fraction form
    6,472.61/8,929.65 = 3,639.32/x
  3. Step 3: Cross multiply
    6,472.61x = 8,929.65 × 3,639.32
  4. Step 4: Simplify right side
    6,472.61x = 32,497,853.84
  5. Step 5: Solve for x
    x = 32,497,853.84/6,472.61
  6. Step 6: Final answer
    x = 5,020.83

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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.