Home / 1,032.28-1,424.34-769.72

Finding the Fourth Proportional to 1,032.28, 1,424.34 and 769.72

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Solution

The fourth proportional to 1,032.28, 1,424.34 and 769.72 is: 1,062.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,032.28 : 1,424.34 = 769.72 : x
  2. Step 2: Convert to fraction form
    1,032.28/1,424.34 = 769.72/x
  3. Step 3: Cross multiply
    1,032.28x = 1,424.34 × 769.72
  4. Step 4: Simplify right side
    1,032.28x = 1,096,342.98
  5. Step 5: Solve for x
    x = 1,096,342.98/1,032.28
  6. Step 6: Final answer
    x = 1,062.06

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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.