Home / 3,761.20-5,644.04-1,812.40

Finding the Fourth Proportional to 3,761.20, 5,644.04 and 1,812.40

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Solution

The fourth proportional to 3,761.20, 5,644.04 and 1,812.40 is: 2,719.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.20 : 5,644.04 = 1,812.40 : x
  2. Step 2: Convert to fraction form
    3,761.20/5,644.04 = 1,812.40/x
  3. Step 3: Cross multiply
    3,761.20x = 5,644.04 × 1,812.40
  4. Step 4: Simplify right side
    3,761.20x = 10,229,258.10
  5. Step 5: Solve for x
    x = 10,229,258.10/3,761.20
  6. Step 6: Final answer
    x = 2,719.68

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1.5x scale

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.