Home / 10,610.20-15,915.30-2,819.80

Finding the Fourth Proportional to 10,610.20, 15,915.30 and 2,819.80

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Solution

The fourth proportional to 10,610.20, 15,915.30 and 2,819.80 is: 4,229.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,610.20 : 15,915.30 = 2,819.80 : x
  2. Step 2: Convert to fraction form
    10,610.20/15,915.30 = 2,819.80/x
  3. Step 3: Cross multiply
    10,610.20x = 15,915.30 × 2,819.80
  4. Step 4: Simplify right side
    10,610.20x = 44,877,962.94
  5. Step 5: Solve for x
    x = 44,877,962.94/10,610.20
  6. Step 6: Final answer
    x = 4,229.70

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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.