Home / 7,146.11-9,861.80-4,002.23

Finding the Fourth Proportional to 7,146.11, 9,861.80 and 4,002.23

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Solution

The fourth proportional to 7,146.11, 9,861.80 and 4,002.23 is: 5,523.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.11 : 9,861.80 = 4,002.23 : x
  2. Step 2: Convert to fraction form
    7,146.11/9,861.80 = 4,002.23/x
  3. Step 3: Cross multiply
    7,146.11x = 9,861.80 × 4,002.23
  4. Step 4: Simplify right side
    7,146.11x = 39,469,122.49
  5. Step 5: Solve for x
    x = 39,469,122.49/7,146.11
  6. Step 6: Final answer
    x = 5,523.17

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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.