Home / 1,915.10-2,642.77-1,170.30

Finding the Fourth Proportional to 1,915.10, 2,642.77 and 1,170.30

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Solution

The fourth proportional to 1,915.10, 2,642.77 and 1,170.30 is: 1,614.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.10 : 2,642.77 = 1,170.30 : x
  2. Step 2: Convert to fraction form
    1,915.10/2,642.77 = 1,170.30/x
  3. Step 3: Cross multiply
    1,915.10x = 2,642.77 × 1,170.30
  4. Step 4: Simplify right side
    1,915.10x = 3,092,833.73
  5. Step 5: Solve for x
    x = 3,092,833.73/1,915.10
  6. Step 6: Final answer
    x = 1,614.97

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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.