Home / 3,946.57-5,915.85-2,560.78

Finding the Fourth Proportional to 3,946.57, 5,915.85 and 2,560.78

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Solution

The fourth proportional to 3,946.57, 5,915.85 and 2,560.78 is: 3,838.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.57 : 5,915.85 = 2,560.78 : x
  2. Step 2: Convert to fraction form
    3,946.57/5,915.85 = 2,560.78/x
  3. Step 3: Cross multiply
    3,946.57x = 5,915.85 × 2,560.78
  4. Step 4: Simplify right side
    3,946.57x = 15,149,190.36
  5. Step 5: Solve for x
    x = 15,149,190.36/3,946.57
  6. Step 6: Final answer
    x = 3,838.57

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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.