Home / 1,231.78-1,844.40-1,016.32

Finding the Fourth Proportional to 1,231.78, 1,844.40 and 1,016.32

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Solution

The fourth proportional to 1,231.78, 1,844.40 and 1,016.32 is: 1,521.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.78 : 1,844.40 = 1,016.32 : x
  2. Step 2: Convert to fraction form
    1,231.78/1,844.40 = 1,016.32/x
  3. Step 3: Cross multiply
    1,231.78x = 1,844.40 × 1,016.32
  4. Step 4: Simplify right side
    1,231.78x = 1,874,500.61
  5. Step 5: Solve for x
    x = 1,874,500.61/1,231.78
  6. Step 6: Final answer
    x = 1,521.78

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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.