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Finding the Fourth Proportional to 8,899.32, 13,348.80 and 2,659.28

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Solution

The fourth proportional to 8,899.32, 13,348.80 and 2,659.28 is: 3,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.32 : 13,348.80 = 2,659.28 : x
  2. Step 2: Convert to fraction form
    8,899.32/13,348.80 = 2,659.28/x
  3. Step 3: Cross multiply
    8,899.32x = 13,348.80 × 2,659.28
  4. Step 4: Simplify right side
    8,899.32x = 35,498,196.86
  5. Step 5: Solve for x
    x = 35,498,196.86/8,899.32
  6. Step 6: Final answer
    x = 3,988.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.