Home / 3,731.48-5,149.50-2,138.20

Finding the Fourth Proportional to 3,731.48, 5,149.50 and 2,138.20

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Solution

The fourth proportional to 3,731.48, 5,149.50 and 2,138.20 is: 2,950.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,731.48 : 5,149.50 = 2,138.20 : x
  2. Step 2: Convert to fraction form
    3,731.48/5,149.50 = 2,138.20/x
  3. Step 3: Cross multiply
    3,731.48x = 5,149.50 × 2,138.20
  4. Step 4: Simplify right side
    3,731.48x = 11,010,648.03
  5. Step 5: Solve for x
    x = 11,010,648.03/3,731.48
  6. Step 6: Final answer
    x = 2,950.74

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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.