Home / 1,237.24-1,707.11-739.80

Finding the Fourth Proportional to 1,237.24, 1,707.11 and 739.80

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Solution

The fourth proportional to 1,237.24, 1,707.11 and 739.80 is: 1,020.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.24 : 1,707.11 = 739.80 : x
  2. Step 2: Convert to fraction form
    1,237.24/1,707.11 = 739.80/x
  3. Step 3: Cross multiply
    1,237.24x = 1,707.11 × 739.80
  4. Step 4: Simplify right side
    1,237.24x = 1,262,919.98
  5. Step 5: Solve for x
    x = 1,262,919.98/1,237.24
  6. Step 6: Final answer
    x = 1,020.76

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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.