Home / 1,237.29-1,707.45-739.91

Finding the Fourth Proportional to 1,237.29, 1,707.45 and 739.91

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Solution

The fourth proportional to 1,237.29, 1,707.45 and 739.91 is: 1,021.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.29 : 1,707.45 = 739.91 : x
  2. Step 2: Convert to fraction form
    1,237.29/1,707.45 = 739.91/x
  3. Step 3: Cross multiply
    1,237.29x = 1,707.45 × 739.91
  4. Step 4: Simplify right side
    1,237.29x = 1,263,350.79
  5. Step 5: Solve for x
    x = 1,263,350.79/1,237.29
  6. Step 6: Final answer
    x = 1,021.06

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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.