Home / 2,719.76-3,752.46-1,540.80

Finding the Fourth Proportional to 2,719.76, 3,752.46 and 1,540.80

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Solution

The fourth proportional to 2,719.76, 3,752.46 and 1,540.80 is: 2,125.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.76 : 3,752.46 = 1,540.80 : x
  2. Step 2: Convert to fraction form
    2,719.76/3,752.46 = 1,540.80/x
  3. Step 3: Cross multiply
    2,719.76x = 3,752.46 × 1,540.80
  4. Step 4: Simplify right side
    2,719.76x = 5,781,790.37
  5. Step 5: Solve for x
    x = 5,781,790.37/2,719.76
  6. Step 6: Final answer
    x = 2,125.85

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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.