Home / 5,241.12-7,861.92-2,778.24

Finding the Fourth Proportional to 5,241.12, 7,861.92 and 2,778.24

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Solution

The fourth proportional to 5,241.12, 7,861.92 and 2,778.24 is: 4,167.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,241.12 : 7,861.92 = 2,778.24 : x
  2. Step 2: Convert to fraction form
    5,241.12/7,861.92 = 2,778.24/x
  3. Step 3: Cross multiply
    5,241.12x = 7,861.92 × 2,778.24
  4. Step 4: Simplify right side
    5,241.12x = 21,842,300.62
  5. Step 5: Solve for x
    x = 21,842,300.62/5,241.12
  6. Step 6: Final answer
    x = 4,167.49

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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.