Home / 2,915.20-4,372.68-1,183.80

Finding the Fourth Proportional to 2,915.20, 4,372.68 and 1,183.80

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Solution

The fourth proportional to 2,915.20, 4,372.68 and 1,183.80 is: 1,775.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.20 : 4,372.68 = 1,183.80 : x
  2. Step 2: Convert to fraction form
    2,915.20/4,372.68 = 1,183.80/x
  3. Step 3: Cross multiply
    2,915.20x = 4,372.68 × 1,183.80
  4. Step 4: Simplify right side
    2,915.20x = 5,176,378.58
  5. Step 5: Solve for x
    x = 5,176,378.58/2,915.20
  6. Step 6: Final answer
    x = 1,775.65

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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.