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Finding the Fourth Proportional to 8,843.68, 12,211.66 and 7,897.80

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Solution

The fourth proportional to 8,843.68, 12,211.66 and 7,897.80 is: 10,905.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,843.68 : 12,211.66 = 7,897.80 : x
  2. Step 2: Convert to fraction form
    8,843.68/12,211.66 = 7,897.80/x
  3. Step 3: Cross multiply
    8,843.68x = 12,211.66 × 7,897.80
  4. Step 4: Simplify right side
    8,843.68x = 96,445,304.01
  5. Step 5: Solve for x
    x = 96,445,304.01/8,843.68
  6. Step 6: Final answer
    x = 10,905.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.