Home / 3,251.60-4,877.40-1,305.20

Finding the Fourth Proportional to 3,251.60, 4,877.40 and 1,305.20

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Solution

The fourth proportional to 3,251.60, 4,877.40 and 1,305.20 is: 1,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,251.60 : 4,877.40 = 1,305.20 : x
  2. Step 2: Convert to fraction form
    3,251.60/4,877.40 = 1,305.20/x
  3. Step 3: Cross multiply
    3,251.60x = 4,877.40 × 1,305.20
  4. Step 4: Simplify right side
    3,251.60x = 6,365,982.48
  5. Step 5: Solve for x
    x = 6,365,982.48/3,251.60
  6. Step 6: Final answer
    x = 1,957.80

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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.