Home / 1,488.28-2,232.74-939.82

Finding the Fourth Proportional to 1,488.28, 2,232.74 and 939.82

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Solution

The fourth proportional to 1,488.28, 2,232.74 and 939.82 is: 1,409.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.28 : 2,232.74 = 939.82 : x
  2. Step 2: Convert to fraction form
    1,488.28/2,232.74 = 939.82/x
  3. Step 3: Cross multiply
    1,488.28x = 2,232.74 × 939.82
  4. Step 4: Simplify right side
    1,488.28x = 2,098,373.71
  5. Step 5: Solve for x
    x = 2,098,373.71/1,488.28
  6. Step 6: Final answer
    x = 1,409.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.