Home / 7,012.20-10,518.24-2,081.88

Finding the Fourth Proportional to 7,012.20, 10,518.24 and 2,081.88

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Solution

The fourth proportional to 7,012.20, 10,518.24 and 2,081.88 is: 3,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,012.20 : 10,518.24 = 2,081.88 : x
  2. Step 2: Convert to fraction form
    7,012.20/10,518.24 = 2,081.88/x
  3. Step 3: Cross multiply
    7,012.20x = 10,518.24 × 2,081.88
  4. Step 4: Simplify right side
    7,012.20x = 21,897,713.49
  5. Step 5: Solve for x
    x = 21,897,713.49/7,012.20
  6. Step 6: Final answer
    x = 3,122.80

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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.