Home / 3,861.60-5,795.10-2,478.30

Finding the Fourth Proportional to 3,861.60, 5,795.10 and 2,478.30

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Solution

The fourth proportional to 3,861.60, 5,795.10 and 2,478.30 is: 3,719.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.60 : 5,795.10 = 2,478.30 : x
  2. Step 2: Convert to fraction form
    3,861.60/5,795.10 = 2,478.30/x
  3. Step 3: Cross multiply
    3,861.60x = 5,795.10 × 2,478.30
  4. Step 4: Simplify right side
    3,861.60x = 14,361,996.33
  5. Step 5: Solve for x
    x = 14,361,996.33/3,861.60
  6. Step 6: Final answer
    x = 3,719.18

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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.