Home / 1,231.72-1,848.17-615.48

Finding the Fourth Proportional to 1,231.72, 1,848.17 and 615.48

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Solution

The fourth proportional to 1,231.72, 1,848.17 and 615.48 is: 923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.72 : 1,848.17 = 615.48 : x
  2. Step 2: Convert to fraction form
    1,231.72/1,848.17 = 615.48/x
  3. Step 3: Cross multiply
    1,231.72x = 1,848.17 × 615.48
  4. Step 4: Simplify right side
    1,231.72x = 1,137,503.97
  5. Step 5: Solve for x
    x = 1,137,503.97/1,231.72
  6. Step 6: Final answer
    x = 923.51

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Double scale
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1.5x scale

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.