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Finding the Fourth Proportional to 7,220.97, 10,831.45 and 2,603.97

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Solution

The fourth proportional to 7,220.97, 10,831.45 and 2,603.97 is: 3,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.97 : 10,831.45 = 2,603.97 : x
  2. Step 2: Convert to fraction form
    7,220.97/10,831.45 = 2,603.97/x
  3. Step 3: Cross multiply
    7,220.97x = 10,831.45 × 2,603.97
  4. Step 4: Simplify right side
    7,220.97x = 28,204,770.86
  5. Step 5: Solve for x
    x = 28,204,770.86/7,220.97
  6. Step 6: Final answer
    x = 3,905.95

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Similar ratio
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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.