Home / 1,247.35-1,721.96-750.37

Finding the Fourth Proportional to 1,247.35, 1,721.96 and 750.37

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Solution

The fourth proportional to 1,247.35, 1,721.96 and 750.37 is: 1,035.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.35 : 1,721.96 = 750.37 : x
  2. Step 2: Convert to fraction form
    1,247.35/1,721.96 = 750.37/x
  3. Step 3: Cross multiply
    1,247.35x = 1,721.96 × 750.37
  4. Step 4: Simplify right side
    1,247.35x = 1,292,107.13
  5. Step 5: Solve for x
    x = 1,292,107.13/1,247.35
  6. Step 6: Final answer
    x = 1,035.88

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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.