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Finding the Fourth Proportional to 8,880.42, 12,251.49 and 7,761.41

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Solution

The fourth proportional to 8,880.42, 12,251.49 and 7,761.41 is: 10,707.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.42 : 12,251.49 = 7,761.41 : x
  2. Step 2: Convert to fraction form
    8,880.42/12,251.49 = 7,761.41/x
  3. Step 3: Cross multiply
    8,880.42x = 12,251.49 × 7,761.41
  4. Step 4: Simplify right side
    8,880.42x = 95,088,775.74
  5. Step 5: Solve for x
    x = 95,088,775.74/8,880.42
  6. Step 6: Final answer
    x = 10,707.69

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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.