Home / 1,732.28-2,390.30-986.20

Finding the Fourth Proportional to 1,732.28, 2,390.30 and 986.20

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Solution

The fourth proportional to 1,732.28, 2,390.30 and 986.20 is: 1,360.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,732.28 : 2,390.30 = 986.20 : x
  2. Step 2: Convert to fraction form
    1,732.28/2,390.30 = 986.20/x
  3. Step 3: Cross multiply
    1,732.28x = 2,390.30 × 986.20
  4. Step 4: Simplify right side
    1,732.28x = 2,357,306.65
  5. Step 5: Solve for x
    x = 2,357,306.65/1,732.28
  6. Step 6: Final answer
    x = 1,360.82

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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.