Home / 1,187.32-1,778.52-927.04

Finding the Fourth Proportional to 1,187.32, 1,778.52 and 927.04

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Solution

The fourth proportional to 1,187.32, 1,778.52 and 927.04 is: 1,388.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.32 : 1,778.52 = 927.04 : x
  2. Step 2: Convert to fraction form
    1,187.32/1,778.52 = 927.04/x
  3. Step 3: Cross multiply
    1,187.32x = 1,778.52 × 927.04
  4. Step 4: Simplify right side
    1,187.32x = 1,648,759.18
  5. Step 5: Solve for x
    x = 1,648,759.18/1,187.32
  6. Step 6: Final answer
    x = 1,388.64

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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.