Home / 1,036.80-1,550.70-927.90

Finding the Fourth Proportional to 1,036.80, 1,550.70 and 927.90

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Solution

The fourth proportional to 1,036.80, 1,550.70 and 927.90 is: 1,387.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,036.80 : 1,550.70 = 927.90 : x
  2. Step 2: Convert to fraction form
    1,036.80/1,550.70 = 927.90/x
  3. Step 3: Cross multiply
    1,036.80x = 1,550.70 × 927.90
  4. Step 4: Simplify right side
    1,036.80x = 1,438,894.53
  5. Step 5: Solve for x
    x = 1,438,894.53/1,036.80
  6. Step 6: Final answer
    x = 1,387.82

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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.