Home / 2,915.10-4,372.65-2,040.30

Finding the Fourth Proportional to 2,915.10, 4,372.65 and 2,040.30

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Solution

The fourth proportional to 2,915.10, 4,372.65 and 2,040.30 is: 3,060.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.10 : 4,372.65 = 2,040.30 : x
  2. Step 2: Convert to fraction form
    2,915.10/4,372.65 = 2,040.30/x
  3. Step 3: Cross multiply
    2,915.10x = 4,372.65 × 2,040.30
  4. Step 4: Simplify right side
    2,915.10x = 8,921,517.80
  5. Step 5: Solve for x
    x = 8,921,517.80/2,915.10
  6. Step 6: Final answer
    x = 3,060.45

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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.