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Finding the Fourth Proportional to 9,126.65, 13,705.77 and 8,711.12

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Solution

The fourth proportional to 9,126.65, 13,705.77 and 8,711.12 is: 13,081.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,126.65 : 13,705.77 = 8,711.12 : x
  2. Step 2: Convert to fraction form
    9,126.65/13,705.77 = 8,711.12/x
  3. Step 3: Cross multiply
    9,126.65x = 13,705.77 × 8,711.12
  4. Step 4: Simplify right side
    9,126.65x = 119,392,607.16
  5. Step 5: Solve for x
    x = 119,392,607.16/9,126.65
  6. Step 6: Final answer
    x = 13,081.76

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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.