Home / 5,239.96-7,230.18-3,116.20

Finding the Fourth Proportional to 5,239.96, 7,230.18 and 3,116.20

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Solution

The fourth proportional to 5,239.96, 7,230.18 and 3,116.20 is: 4,299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.96 : 7,230.18 = 3,116.20 : x
  2. Step 2: Convert to fraction form
    5,239.96/7,230.18 = 3,116.20/x
  3. Step 3: Cross multiply
    5,239.96x = 7,230.18 × 3,116.20
  4. Step 4: Simplify right side
    5,239.96x = 22,530,686.92
  5. Step 5: Solve for x
    x = 22,530,686.92/5,239.96
  6. Step 6: Final answer
    x = 4,299.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.