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Finding the Fourth Proportional to 8,631.41, 12,937.31 and 7,589.39

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Solution

The fourth proportional to 8,631.41, 12,937.31 and 7,589.39 is: 11,375.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.41 : 12,937.31 = 7,589.39 : x
  2. Step 2: Convert to fraction form
    8,631.41/12,937.31 = 7,589.39/x
  3. Step 3: Cross multiply
    8,631.41x = 12,937.31 × 7,589.39
  4. Step 4: Simplify right side
    8,631.41x = 98,186,291.14
  5. Step 5: Solve for x
    x = 98,186,291.14/8,631.41
  6. Step 6: Final answer
    x = 11,375.47

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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.