Home / 2,610.38-3,915.66-1,311.14

Finding the Fourth Proportional to 2,610.38, 3,915.66 and 1,311.14

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Solution

The fourth proportional to 2,610.38, 3,915.66 and 1,311.14 is: 1,966.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,610.38 : 3,915.66 = 1,311.14 : x
  2. Step 2: Convert to fraction form
    2,610.38/3,915.66 = 1,311.14/x
  3. Step 3: Cross multiply
    2,610.38x = 3,915.66 × 1,311.14
  4. Step 4: Simplify right side
    2,610.38x = 5,133,978.45
  5. Step 5: Solve for x
    x = 5,133,978.45/2,610.38
  6. Step 6: Final answer
    x = 1,966.76

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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.