Home / 1,247.38-1,721.51-750.01

Finding the Fourth Proportional to 1,247.38, 1,721.51 and 750.01

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Solution

The fourth proportional to 1,247.38, 1,721.51 and 750.01 is: 1,035.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.38 : 1,721.51 = 750.01 : x
  2. Step 2: Convert to fraction form
    1,247.38/1,721.51 = 750.01/x
  3. Step 3: Cross multiply
    1,247.38x = 1,721.51 × 750.01
  4. Step 4: Simplify right side
    1,247.38x = 1,291,150.93
  5. Step 5: Solve for x
    x = 1,291,150.93/1,247.38
  6. Step 6: Final answer
    x = 1,035.09

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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.