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Finding the Fourth Proportional to 8,755.68, 12,091.04 and 5,617.32

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Solution

The fourth proportional to 8,755.68, 12,091.04 and 5,617.32 is: 7,757.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.68 : 12,091.04 = 5,617.32 : x
  2. Step 2: Convert to fraction form
    8,755.68/12,091.04 = 5,617.32/x
  3. Step 3: Cross multiply
    8,755.68x = 12,091.04 × 5,617.32
  4. Step 4: Simplify right side
    8,755.68x = 67,919,240.81
  5. Step 5: Solve for x
    x = 67,919,240.81/8,755.68
  6. Step 6: Final answer
    x = 7,757.16

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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.