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Finding the Fourth Proportional to 8,722.61, 13,083.92 and 7,177.37

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Solution

The fourth proportional to 8,722.61, 13,083.92 and 7,177.37 is: 10,766.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.61 : 13,083.92 = 7,177.37 : x
  2. Step 2: Convert to fraction form
    8,722.61/13,083.92 = 7,177.37/x
  3. Step 3: Cross multiply
    8,722.61x = 13,083.92 × 7,177.37
  4. Step 4: Simplify right side
    8,722.61x = 93,908,087.41
  5. Step 5: Solve for x
    x = 93,908,087.41/8,722.61
  6. Step 6: Final answer
    x = 10,766.05

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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.