Home / 2,862.80-4,294.40-1,131.20

Finding the Fourth Proportional to 2,862.80, 4,294.40 and 1,131.20

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Solution

The fourth proportional to 2,862.80, 4,294.40 and 1,131.20 is: 1,696.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.80 : 4,294.40 = 1,131.20 : x
  2. Step 2: Convert to fraction form
    2,862.80/4,294.40 = 1,131.20/x
  3. Step 3: Cross multiply
    2,862.80x = 4,294.40 × 1,131.20
  4. Step 4: Simplify right side
    2,862.80x = 4,857,825.28
  5. Step 5: Solve for x
    x = 4,857,825.28/2,862.80
  6. Step 6: Final answer
    x = 1,696.88

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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.