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Finding the Fourth Proportional to 8,714.71, 12,020.15 and 5,359.36

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Solution

The fourth proportional to 8,714.71, 12,020.15 and 5,359.36 is: 7,392.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,714.71 : 12,020.15 = 5,359.36 : x
  2. Step 2: Convert to fraction form
    8,714.71/12,020.15 = 5,359.36/x
  3. Step 3: Cross multiply
    8,714.71x = 12,020.15 × 5,359.36
  4. Step 4: Simplify right side
    8,714.71x = 64,420,251.00
  5. Step 5: Solve for x
    x = 64,420,251.00/8,714.71
  6. Step 6: Final answer
    x = 7,392.13

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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.