Home / 2,915.20-4,372.72-1,183.76

Finding the Fourth Proportional to 2,915.20, 4,372.72 and 1,183.76

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Solution

The fourth proportional to 2,915.20, 4,372.72 and 1,183.76 is: 1,775.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.20 : 4,372.72 = 1,183.76 : x
  2. Step 2: Convert to fraction form
    2,915.20/4,372.72 = 1,183.76/x
  3. Step 3: Cross multiply
    2,915.20x = 4,372.72 × 1,183.76
  4. Step 4: Simplify right side
    2,915.20x = 5,176,251.03
  5. Step 5: Solve for x
    x = 5,176,251.03/2,915.20
  6. Step 6: Final answer
    x = 1,775.61

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1.5x scale

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.