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Finding the Fourth Proportional to 3,903.72, 5,845.80 and 3,132.60

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Solution

The fourth proportional to 3,903.72, 5,845.80 and 3,132.60 is: 4,691.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.72 : 5,845.80 = 3,132.60 : x
  2. Step 2: Convert to fraction form
    3,903.72/5,845.80 = 3,132.60/x
  3. Step 3: Cross multiply
    3,903.72x = 5,845.80 × 3,132.60
  4. Step 4: Simplify right side
    3,903.72x = 18,312,553.08
  5. Step 5: Solve for x
    x = 18,312,553.08/3,903.72
  6. Step 6: Final answer
    x = 4,691.05

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1.5x scale

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.