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Finding the Fourth Proportional to 7,881.81, 11,822.46 and 3,201.73

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Solution

The fourth proportional to 7,881.81, 11,822.46 and 3,201.73 is: 4,802.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.81 : 11,822.46 = 3,201.73 : x
  2. Step 2: Convert to fraction form
    7,881.81/11,822.46 = 3,201.73/x
  3. Step 3: Cross multiply
    7,881.81x = 11,822.46 × 3,201.73
  4. Step 4: Simplify right side
    7,881.81x = 37,852,283.29
  5. Step 5: Solve for x
    x = 37,852,283.29/7,881.81
  6. Step 6: Final answer
    x = 4,802.49

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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.