Home / 2,531.40-3,791.85-1,488.25

Finding the Fourth Proportional to 2,531.40, 3,791.85 and 1,488.25

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Solution

The fourth proportional to 2,531.40, 3,791.85 and 1,488.25 is: 2,229.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,531.40 : 3,791.85 = 1,488.25 : x
  2. Step 2: Convert to fraction form
    2,531.40/3,791.85 = 1,488.25/x
  3. Step 3: Cross multiply
    2,531.40x = 3,791.85 × 1,488.25
  4. Step 4: Simplify right side
    2,531.40x = 5,643,220.76
  5. Step 5: Solve for x
    x = 5,643,220.76/2,531.40
  6. Step 6: Final answer
    x = 2,229.29

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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.