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Finding the Fourth Proportional to 8,617.56, 11,893.08 and 5,081.92

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Solution

The fourth proportional to 8,617.56, 11,893.08 and 5,081.92 is: 7,013.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,617.56 : 11,893.08 = 5,081.92 : x
  2. Step 2: Convert to fraction form
    8,617.56/11,893.08 = 5,081.92/x
  3. Step 3: Cross multiply
    8,617.56x = 11,893.08 × 5,081.92
  4. Step 4: Simplify right side
    8,617.56x = 60,439,681.11
  5. Step 5: Solve for x
    x = 60,439,681.11/8,617.56
  6. Step 6: Final answer
    x = 7,013.55

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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.