Home / 3,701.60-5,107.92-2,129.39

Finding the Fourth Proportional to 3,701.60, 5,107.92 and 2,129.39

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Solution

The fourth proportional to 3,701.60, 5,107.92 and 2,129.39 is: 2,938.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,701.60 : 5,107.92 = 2,129.39 : x
  2. Step 2: Convert to fraction form
    3,701.60/5,107.92 = 2,129.39/x
  3. Step 3: Cross multiply
    3,701.60x = 5,107.92 × 2,129.39
  4. Step 4: Simplify right side
    3,701.60x = 10,876,753.77
  5. Step 5: Solve for x
    x = 10,876,753.77/3,701.60
  6. Step 6: Final answer
    x = 2,938.39

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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.