Home / 7,123.68-10,687.92-2,193.12

Finding the Fourth Proportional to 7,123.68, 10,687.92 and 2,193.12

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Solution

The fourth proportional to 7,123.68, 10,687.92 and 2,193.12 is: 3,290.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.68 : 10,687.92 = 2,193.12 : x
  2. Step 2: Convert to fraction form
    7,123.68/10,687.92 = 2,193.12/x
  3. Step 3: Cross multiply
    7,123.68x = 10,687.92 × 2,193.12
  4. Step 4: Simplify right side
    7,123.68x = 23,439,891.11
  5. Step 5: Solve for x
    x = 23,439,891.11/7,123.68
  6. Step 6: Final answer
    x = 3,290.42

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1.5x scale

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.