Home / 1,247.24-1,721.19-750.16

Finding the Fourth Proportional to 1,247.24, 1,721.19 and 750.16

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Solution

The fourth proportional to 1,247.24, 1,721.19 and 750.16 is: 1,035.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.24 : 1,721.19 = 750.16 : x
  2. Step 2: Convert to fraction form
    1,247.24/1,721.19 = 750.16/x
  3. Step 3: Cross multiply
    1,247.24x = 1,721.19 × 750.16
  4. Step 4: Simplify right side
    1,247.24x = 1,291,171.53
  5. Step 5: Solve for x
    x = 1,291,171.53/1,247.24
  6. Step 6: Final answer
    x = 1,035.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.