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Finding the Fourth Proportional to 8,616.80, 11,891.20 and 5,034.22

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Solution

The fourth proportional to 8,616.80, 11,891.20 and 5,034.22 is: 6,947.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.80 : 11,891.20 = 5,034.22 : x
  2. Step 2: Convert to fraction form
    8,616.80/11,891.20 = 5,034.22/x
  3. Step 3: Cross multiply
    8,616.80x = 11,891.20 × 5,034.22
  4. Step 4: Simplify right side
    8,616.80x = 59,862,916.86
  5. Step 5: Solve for x
    x = 59,862,916.86/8,616.80
  6. Step 6: Final answer
    x = 6,947.23

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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.