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Finding the Fourth Proportional to 3,339.60, 5,003.76 and 1,487.88

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Solution

The fourth proportional to 3,339.60, 5,003.76 and 1,487.88 is: 2,229.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,339.60 : 5,003.76 = 1,487.88 : x
  2. Step 2: Convert to fraction form
    3,339.60/5,003.76 = 1,487.88/x
  3. Step 3: Cross multiply
    3,339.60x = 5,003.76 × 1,487.88
  4. Step 4: Simplify right side
    3,339.60x = 7,444,994.43
  5. Step 5: Solve for x
    x = 7,444,994.43/3,339.60
  6. Step 6: Final answer
    x = 2,229.31

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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.