Home / 5,412.27-8,121.65-1,949.79

Finding the Fourth Proportional to 5,412.27, 8,121.65 and 1,949.79

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Solution

The fourth proportional to 5,412.27, 8,121.65 and 1,949.79 is: 2,925.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.27 : 8,121.65 = 1,949.79 : x
  2. Step 2: Convert to fraction form
    5,412.27/8,121.65 = 1,949.79/x
  3. Step 3: Cross multiply
    5,412.27x = 8,121.65 × 1,949.79
  4. Step 4: Simplify right side
    5,412.27x = 15,835,502.20
  5. Step 5: Solve for x
    x = 15,835,502.20/5,412.27
  6. Step 6: Final answer
    x = 2,925.85

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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.