Home / 1,517.90-2,274.40-1,372.10

Finding the Fourth Proportional to 1,517.90, 2,274.40 and 1,372.10

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Solution

The fourth proportional to 1,517.90, 2,274.40 and 1,372.10 is: 2,055.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.90 : 2,274.40 = 1,372.10 : x
  2. Step 2: Convert to fraction form
    1,517.90/2,274.40 = 1,372.10/x
  3. Step 3: Cross multiply
    1,517.90x = 2,274.40 × 1,372.10
  4. Step 4: Simplify right side
    1,517.90x = 3,120,704.24
  5. Step 5: Solve for x
    x = 3,120,704.24/1,517.90
  6. Step 6: Final answer
    x = 2,055.94

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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.