Home / 5,638.60-7,781.68-3,248.96

Finding the Fourth Proportional to 5,638.60, 7,781.68 and 3,248.96

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Solution

The fourth proportional to 5,638.60, 7,781.68 and 3,248.96 is: 4,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.60 : 7,781.68 = 3,248.96 : x
  2. Step 2: Convert to fraction form
    5,638.60/7,781.68 = 3,248.96/x
  3. Step 3: Cross multiply
    5,638.60x = 7,781.68 × 3,248.96
  4. Step 4: Simplify right side
    5,638.60x = 25,282,367.05
  5. Step 5: Solve for x
    x = 25,282,367.05/5,638.60
  6. Step 6: Final answer
    x = 4,483.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.