Home / 7,123.18-10,685.99-2,192.71

Finding the Fourth Proportional to 7,123.18, 10,685.99 and 2,192.71

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Solution

The fourth proportional to 7,123.18, 10,685.99 and 2,192.71 is: 3,289.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,123.18 : 10,685.99 = 2,192.71 : x
  2. Step 2: Convert to fraction form
    7,123.18/10,685.99 = 2,192.71/x
  3. Step 3: Cross multiply
    7,123.18x = 10,685.99 × 2,192.71
  4. Step 4: Simplify right side
    7,123.18x = 23,431,277.13
  5. Step 5: Solve for x
    x = 23,431,277.13/7,123.18
  6. Step 6: Final answer
    x = 3,289.44

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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.