Home / 7,711.20-11,549.79-6,243.48

Finding the Fourth Proportional to 7,711.20, 11,549.79 and 6,243.48

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Solution

The fourth proportional to 7,711.20, 11,549.79 and 6,243.48 is: 9,351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.20 : 11,549.79 = 6,243.48 : x
  2. Step 2: Convert to fraction form
    7,711.20/11,549.79 = 6,243.48/x
  3. Step 3: Cross multiply
    7,711.20x = 11,549.79 × 6,243.48
  4. Step 4: Simplify right side
    7,711.20x = 72,110,882.87
  5. Step 5: Solve for x
    x = 72,110,882.87/7,711.20
  6. Step 6: Final answer
    x = 9,351.45

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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.