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Finding the Fourth Proportional to 8,624.32, 12,927.12 and 5,661.52

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Solution

The fourth proportional to 8,624.32, 12,927.12 and 5,661.52 is: 8,486.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.32 : 12,927.12 = 5,661.52 : x
  2. Step 2: Convert to fraction form
    8,624.32/12,927.12 = 5,661.52/x
  3. Step 3: Cross multiply
    8,624.32x = 12,927.12 × 5,661.52
  4. Step 4: Simplify right side
    8,624.32x = 73,187,148.42
  5. Step 5: Solve for x
    x = 73,187,148.42/8,624.32
  6. Step 6: Final answer
    x = 8,486.14

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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.