Home / 3,861.40-5,792.10-2,630.20

Finding the Fourth Proportional to 3,861.40, 5,792.10 and 2,630.20

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Solution

The fourth proportional to 3,861.40, 5,792.10 and 2,630.20 is: 3,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.40 : 5,792.10 = 2,630.20 : x
  2. Step 2: Convert to fraction form
    3,861.40/5,792.10 = 2,630.20/x
  3. Step 3: Cross multiply
    3,861.40x = 5,792.10 × 2,630.20
  4. Step 4: Simplify right side
    3,861.40x = 15,234,381.42
  5. Step 5: Solve for x
    x = 15,234,381.42/3,861.40
  6. Step 6: Final answer
    x = 3,945.30

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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.