Home / 3,861.96-5,792.56-1,915.44

Finding the Fourth Proportional to 3,861.96, 5,792.56 and 1,915.44

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Solution

The fourth proportional to 3,861.96, 5,792.56 and 1,915.44 is: 2,872.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.96 : 5,792.56 = 1,915.44 : x
  2. Step 2: Convert to fraction form
    3,861.96/5,792.56 = 1,915.44/x
  3. Step 3: Cross multiply
    3,861.96x = 5,792.56 × 1,915.44
  4. Step 4: Simplify right side
    3,861.96x = 11,095,301.13
  5. Step 5: Solve for x
    x = 11,095,301.13/3,861.96
  6. Step 6: Final answer
    x = 2,872.97

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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.