Home / 7,831.28-11,757.45-7,748.66

Finding the Fourth Proportional to 7,831.28, 11,757.45 and 7,748.66

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Solution

The fourth proportional to 7,831.28, 11,757.45 and 7,748.66 is: 11,633.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.28 : 11,757.45 = 7,748.66 : x
  2. Step 2: Convert to fraction form
    7,831.28/11,757.45 = 7,748.66/x
  3. Step 3: Cross multiply
    7,831.28x = 11,757.45 × 7,748.66
  4. Step 4: Simplify right side
    7,831.28x = 91,104,540.97
  5. Step 5: Solve for x
    x = 91,104,540.97/7,831.28
  6. Step 6: Final answer
    x = 11,633.41

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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.