Home / 1,631.25-2,251.43-932.63

Finding the Fourth Proportional to 1,631.25, 2,251.43 and 932.63

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Solution

The fourth proportional to 1,631.25, 2,251.43 and 932.63 is: 1,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.25 : 2,251.43 = 932.63 : x
  2. Step 2: Convert to fraction form
    1,631.25/2,251.43 = 932.63/x
  3. Step 3: Cross multiply
    1,631.25x = 2,251.43 × 932.63
  4. Step 4: Simplify right side
    1,631.25x = 2,099,738.74
  5. Step 5: Solve for x
    x = 2,099,738.74/1,631.25
  6. Step 6: Final answer
    x = 1,287.20

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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.