Home / 2,119.80-3,177.26-1,337.88

Finding the Fourth Proportional to 2,119.80, 3,177.26 and 1,337.88

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Solution

The fourth proportional to 2,119.80, 3,177.26 and 1,337.88 is: 2,005.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.80 : 3,177.26 = 1,337.88 : x
  2. Step 2: Convert to fraction form
    2,119.80/3,177.26 = 1,337.88/x
  3. Step 3: Cross multiply
    2,119.80x = 3,177.26 × 1,337.88
  4. Step 4: Simplify right side
    2,119.80x = 4,250,792.61
  5. Step 5: Solve for x
    x = 4,250,792.61/2,119.80
  6. Step 6: Final answer
    x = 2,005.28

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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.