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Finding the Fourth Proportional to 9,125.76, 13,711.71 and 8,756.70

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Solution

The fourth proportional to 9,125.76, 13,711.71 and 8,756.70 is: 13,157.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,125.76 : 13,711.71 = 8,756.70 : x
  2. Step 2: Convert to fraction form
    9,125.76/13,711.71 = 8,756.70/x
  3. Step 3: Cross multiply
    9,125.76x = 13,711.71 × 8,756.70
  4. Step 4: Simplify right side
    9,125.76x = 120,069,287.17
  5. Step 5: Solve for x
    x = 120,069,287.17/9,125.76
  6. Step 6: Final answer
    x = 13,157.18

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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.