Home / 2,719.20-3,747.12-1,931.04

Finding the Fourth Proportional to 2,719.20, 3,747.12 and 1,931.04

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Solution

The fourth proportional to 2,719.20, 3,747.12 and 1,931.04 is: 2,661.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.20 : 3,747.12 = 1,931.04 : x
  2. Step 2: Convert to fraction form
    2,719.20/3,747.12 = 1,931.04/x
  3. Step 3: Cross multiply
    2,719.20x = 3,747.12 × 1,931.04
  4. Step 4: Simplify right side
    2,719.20x = 7,235,838.60
  5. Step 5: Solve for x
    x = 7,235,838.60/2,719.20
  6. Step 6: Final answer
    x = 2,661.02

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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.