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Finding the Fourth Proportional to 8,871.60, 13,308.43 and 2,949.02

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Solution

The fourth proportional to 8,871.60, 13,308.43 and 2,949.02 is: 4,423.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,871.60 : 13,308.43 = 2,949.02 : x
  2. Step 2: Convert to fraction form
    8,871.60/13,308.43 = 2,949.02/x
  3. Step 3: Cross multiply
    8,871.60x = 13,308.43 × 2,949.02
  4. Step 4: Simplify right side
    8,871.60x = 39,246,826.24
  5. Step 5: Solve for x
    x = 39,246,826.24/8,871.60
  6. Step 6: Final answer
    x = 4,423.87

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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.