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Finding the Fourth Proportional to 7,901.97, 11,852.86 and 3,220.88

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Solution

The fourth proportional to 7,901.97, 11,852.86 and 3,220.88 is: 4,831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.97 : 11,852.86 = 3,220.88 : x
  2. Step 2: Convert to fraction form
    7,901.97/11,852.86 = 3,220.88/x
  3. Step 3: Cross multiply
    7,901.97x = 11,852.86 × 3,220.88
  4. Step 4: Simplify right side
    7,901.97x = 38,176,623.61
  5. Step 5: Solve for x
    x = 38,176,623.61/7,901.97
  6. Step 6: Final answer
    x = 4,831.28

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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.