Home / 2,275.26-3,142.14-1,489.80

Finding the Fourth Proportional to 2,275.26, 3,142.14 and 1,489.80

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Solution

The fourth proportional to 2,275.26, 3,142.14 and 1,489.80 is: 2,057.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.26 : 3,142.14 = 1,489.80 : x
  2. Step 2: Convert to fraction form
    2,275.26/3,142.14 = 1,489.80/x
  3. Step 3: Cross multiply
    2,275.26x = 3,142.14 × 1,489.80
  4. Step 4: Simplify right side
    2,275.26x = 4,681,160.17
  5. Step 5: Solve for x
    x = 4,681,160.17/2,275.26
  6. Step 6: Final answer
    x = 2,057.42

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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.