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Finding the Fourth Proportional to 8,616.32, 11,890.72 and 4,839.49

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Solution

The fourth proportional to 8,616.32, 11,890.72 and 4,839.49 is: 6,678.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.32 : 11,890.72 = 4,839.49 : x
  2. Step 2: Convert to fraction form
    8,616.32/11,890.72 = 4,839.49/x
  3. Step 3: Cross multiply
    8,616.32x = 11,890.72 × 4,839.49
  4. Step 4: Simplify right side
    8,616.32x = 57,545,002.90
  5. Step 5: Solve for x
    x = 57,545,002.90/8,616.32
  6. Step 6: Final answer
    x = 6,678.61

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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.