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Finding the Fourth Proportional to 8,617.13, 11,890.80 and 4,839.43

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Solution

The fourth proportional to 8,617.13, 11,890.80 and 4,839.43 is: 6,677.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.13 : 11,890.80 = 4,839.43 : x
  2. Step 2: Convert to fraction form
    8,617.13/11,890.80 = 4,839.43/x
  3. Step 3: Cross multiply
    8,617.13x = 11,890.80 × 4,839.43
  4. Step 4: Simplify right side
    8,617.13x = 57,544,694.24
  5. Step 5: Solve for x
    x = 57,544,694.24/8,617.13
  6. Step 6: Final answer
    x = 6,677.94

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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.