Home / 7,178.50-10,767.62-3,912.38

Finding the Fourth Proportional to 7,178.50, 10,767.62 and 3,912.38

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Solution

The fourth proportional to 7,178.50, 10,767.62 and 3,912.38 is: 5,868.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178.50 : 10,767.62 = 3,912.38 : x
  2. Step 2: Convert to fraction form
    7,178.50/10,767.62 = 3,912.38/x
  3. Step 3: Cross multiply
    7,178.50x = 10,767.62 × 3,912.38
  4. Step 4: Simplify right side
    7,178.50x = 42,126,995.45
  5. Step 5: Solve for x
    x = 42,126,995.45/7,178.50
  6. Step 6: Final answer
    x = 5,868.49

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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.