Home / 1,494.12-2,238.66-915.78

Finding the Fourth Proportional to 1,494.12, 2,238.66 and 915.78

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Solution

The fourth proportional to 1,494.12, 2,238.66 and 915.78 is: 1,372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,494.12 : 2,238.66 = 915.78 : x
  2. Step 2: Convert to fraction form
    1,494.12/2,238.66 = 915.78/x
  3. Step 3: Cross multiply
    1,494.12x = 2,238.66 × 915.78
  4. Step 4: Simplify right side
    1,494.12x = 2,050,120.05
  5. Step 5: Solve for x
    x = 2,050,120.05/1,494.12
  6. Step 6: Final answer
    x = 1,372.13

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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.