Home / 1,542.28-2,128.42-1,150.36

Finding the Fourth Proportional to 1,542.28, 2,128.42 and 1,150.36

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Solution

The fourth proportional to 1,542.28, 2,128.42 and 1,150.36 is: 1,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.28 : 2,128.42 = 1,150.36 : x
  2. Step 2: Convert to fraction form
    1,542.28/2,128.42 = 1,150.36/x
  3. Step 3: Cross multiply
    1,542.28x = 2,128.42 × 1,150.36
  4. Step 4: Simplify right side
    1,542.28x = 2,448,449.23
  5. Step 5: Solve for x
    x = 2,448,449.23/1,542.28
  6. Step 6: Final answer
    x = 1,587.55

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Double scale
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1.5x scale

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.