Home / 1,247.72-1,868.23-1,015.66

Finding the Fourth Proportional to 1,247.72, 1,868.23 and 1,015.66

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Solution

The fourth proportional to 1,247.72, 1,868.23 and 1,015.66 is: 1,520.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.72 : 1,868.23 = 1,015.66 : x
  2. Step 2: Convert to fraction form
    1,247.72/1,868.23 = 1,015.66/x
  3. Step 3: Cross multiply
    1,247.72x = 1,868.23 × 1,015.66
  4. Step 4: Simplify right side
    1,247.72x = 1,897,472.06
  5. Step 5: Solve for x
    x = 1,897,472.06/1,247.72
  6. Step 6: Final answer
    x = 1,520.75

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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.