Home / 2,861.10-4,287.60-2,512.80

Finding the Fourth Proportional to 2,861.10, 4,287.60 and 2,512.80

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Solution

The fourth proportional to 2,861.10, 4,287.60 and 2,512.80 is: 3,765.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.10 : 4,287.60 = 2,512.80 : x
  2. Step 2: Convert to fraction form
    2,861.10/4,287.60 = 2,512.80/x
  3. Step 3: Cross multiply
    2,861.10x = 4,287.60 × 2,512.80
  4. Step 4: Simplify right side
    2,861.10x = 10,773,881.28
  5. Step 5: Solve for x
    x = 10,773,881.28/2,861.10
  6. Step 6: Final answer
    x = 3,765.64

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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.