Home / 1,270.27-1,761.94-1,236.55

Finding the Fourth Proportional to 1,270.27, 1,761.94 and 1,236.55

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Solution

The fourth proportional to 1,270.27, 1,761.94 and 1,236.55 is: 1,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.27 : 1,761.94 = 1,236.55 : x
  2. Step 2: Convert to fraction form
    1,270.27/1,761.94 = 1,236.55/x
  3. Step 3: Cross multiply
    1,270.27x = 1,761.94 × 1,236.55
  4. Step 4: Simplify right side
    1,270.27x = 2,178,726.91
  5. Step 5: Solve for x
    x = 2,178,726.91/1,270.27
  6. Step 6: Final answer
    x = 1,715.17

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.