Home / 1,324.30-1,990.95-1,082.58

Finding the Fourth Proportional to 1,324.30, 1,990.95 and 1,082.58

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Solution

The fourth proportional to 1,324.30, 1,990.95 and 1,082.58 is: 1,627.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.30 : 1,990.95 = 1,082.58 : x
  2. Step 2: Convert to fraction form
    1,324.30/1,990.95 = 1,082.58/x
  3. Step 3: Cross multiply
    1,324.30x = 1,990.95 × 1,082.58
  4. Step 4: Simplify right side
    1,324.30x = 2,155,362.65
  5. Step 5: Solve for x
    x = 2,155,362.65/1,324.30
  6. Step 6: Final answer
    x = 1,627.55

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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.