Home / 3,915.31-5,861.45-2,613.55

Finding the Fourth Proportional to 3,915.31, 5,861.45 and 2,613.55

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Solution

The fourth proportional to 3,915.31, 5,861.45 and 2,613.55 is: 3,912.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.31 : 5,861.45 = 2,613.55 : x
  2. Step 2: Convert to fraction form
    3,915.31/5,861.45 = 2,613.55/x
  3. Step 3: Cross multiply
    3,915.31x = 5,861.45 × 2,613.55
  4. Step 4: Simplify right side
    3,915.31x = 15,319,179.58
  5. Step 5: Solve for x
    x = 15,319,179.58/3,915.31
  6. Step 6: Final answer
    x = 3,912.64

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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.