Home / 7,318.20-10,976.76-2,123.76

Finding the Fourth Proportional to 7,318.20, 10,976.76 and 2,123.76

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Solution

The fourth proportional to 7,318.20, 10,976.76 and 2,123.76 is: 3,185.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.20 : 10,976.76 = 2,123.76 : x
  2. Step 2: Convert to fraction form
    7,318.20/10,976.76 = 2,123.76/x
  3. Step 3: Cross multiply
    7,318.20x = 10,976.76 × 2,123.76
  4. Step 4: Simplify right side
    7,318.20x = 23,312,003.82
  5. Step 5: Solve for x
    x = 23,312,003.82/7,318.20
  6. Step 6: Final answer
    x = 3,185.48

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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.