Home / 3,861.40-5,784.38-1,778.52

Finding the Fourth Proportional to 3,861.40, 5,784.38 and 1,778.52

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Solution

The fourth proportional to 3,861.40, 5,784.38 and 1,778.52 is: 2,664.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.40 : 5,784.38 = 1,778.52 : x
  2. Step 2: Convert to fraction form
    3,861.40/5,784.38 = 1,778.52/x
  3. Step 3: Cross multiply
    3,861.40x = 5,784.38 × 1,778.52
  4. Step 4: Simplify right side
    3,861.40x = 10,287,635.52
  5. Step 5: Solve for x
    x = 10,287,635.52/3,861.40
  6. Step 6: Final answer
    x = 2,664.22

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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.