Home / 7,146.05-9,861.42-3,959.28

Finding the Fourth Proportional to 7,146.05, 9,861.42 and 3,959.28

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Solution

The fourth proportional to 7,146.05, 9,861.42 and 3,959.28 is: 5,463.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.05 : 9,861.42 = 3,959.28 : x
  2. Step 2: Convert to fraction form
    7,146.05/9,861.42 = 3,959.28/x
  3. Step 3: Cross multiply
    7,146.05x = 9,861.42 × 3,959.28
  4. Step 4: Simplify right side
    7,146.05x = 39,044,122.98
  5. Step 5: Solve for x
    x = 39,044,122.98/7,146.05
  6. Step 6: Final answer
    x = 5,463.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.