Home / 5,412.52-8,121.30-2,079.66

Finding the Fourth Proportional to 5,412.52, 8,121.30 and 2,079.66

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Solution

The fourth proportional to 5,412.52, 8,121.30 and 2,079.66 is: 3,120.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.52 : 8,121.30 = 2,079.66 : x
  2. Step 2: Convert to fraction form
    5,412.52/8,121.30 = 2,079.66/x
  3. Step 3: Cross multiply
    5,412.52x = 8,121.30 × 2,079.66
  4. Step 4: Simplify right side
    5,412.52x = 16,889,542.76
  5. Step 5: Solve for x
    x = 16,889,542.76/5,412.52
  6. Step 6: Final answer
    x = 3,120.46

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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.