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Finding the Fourth Proportional to 8,637.29, 12,957.15 and 4,254.79

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Solution

The fourth proportional to 8,637.29, 12,957.15 and 4,254.79 is: 6,382.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,637.29 : 12,957.15 = 4,254.79 : x
  2. Step 2: Convert to fraction form
    8,637.29/12,957.15 = 4,254.79/x
  3. Step 3: Cross multiply
    8,637.29x = 12,957.15 × 4,254.79
  4. Step 4: Simplify right side
    8,637.29x = 55,129,952.25
  5. Step 5: Solve for x
    x = 55,129,952.25/8,637.29
  6. Step 6: Final answer
    x = 6,382.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.