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Finding the Fourth Proportional to 8,691.60, 13,037.40 and 2,848.80

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Solution

The fourth proportional to 8,691.60, 13,037.40 and 2,848.80 is: 4,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.60 : 13,037.40 = 2,848.80 : x
  2. Step 2: Convert to fraction form
    8,691.60/13,037.40 = 2,848.80/x
  3. Step 3: Cross multiply
    8,691.60x = 13,037.40 × 2,848.80
  4. Step 4: Simplify right side
    8,691.60x = 37,140,945.12
  5. Step 5: Solve for x
    x = 37,140,945.12/8,691.60
  6. Step 6: Final answer
    x = 4,273.20

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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.