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Finding the Fourth Proportional to 8,701.46, 12,031.64 and 8,560.78

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Solution

The fourth proportional to 8,701.46, 12,031.64 and 8,560.78 is: 11,837.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.46 : 12,031.64 = 8,560.78 : x
  2. Step 2: Convert to fraction form
    8,701.46/12,031.64 = 8,560.78/x
  3. Step 3: Cross multiply
    8,701.46x = 12,031.64 × 8,560.78
  4. Step 4: Simplify right side
    8,701.46x = 103,000,223.08
  5. Step 5: Solve for x
    x = 103,000,223.08/8,701.46
  6. Step 6: Final answer
    x = 11,837.12

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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.