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Finding the Fourth Proportional to 1,542.57, 2,128.07 and 952.75

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Solution

The fourth proportional to 1,542.57, 2,128.07 and 952.75 is: 1,314.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.57 : 2,128.07 = 952.75 : x
  2. Step 2: Convert to fraction form
    1,542.57/2,128.07 = 952.75/x
  3. Step 3: Cross multiply
    1,542.57x = 2,128.07 × 952.75
  4. Step 4: Simplify right side
    1,542.57x = 2,027,518.69
  5. Step 5: Solve for x
    x = 2,027,518.69/1,542.57
  6. Step 6: Final answer
    x = 1,314.38

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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.