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Finding the Fourth Proportional to 8,616.10, 11,893.20 and 5,079.10

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Solution

The fourth proportional to 8,616.10, 11,893.20 and 5,079.10 is: 7,010.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.10 : 11,893.20 = 5,079.10 : x
  2. Step 2: Convert to fraction form
    8,616.10/11,893.20 = 5,079.10/x
  3. Step 3: Cross multiply
    8,616.10x = 11,893.20 × 5,079.10
  4. Step 4: Simplify right side
    8,616.10x = 60,406,752.12
  5. Step 5: Solve for x
    x = 60,406,752.12/8,616.10
  6. Step 6: Final answer
    x = 7,010.92

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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.