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Finding the Fourth Proportional to 8,901.95, 12,280.21 and 8,268.73

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Solution

The fourth proportional to 8,901.95, 12,280.21 and 8,268.73 is: 11,406.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.95 : 12,280.21 = 8,268.73 : x
  2. Step 2: Convert to fraction form
    8,901.95/12,280.21 = 8,268.73/x
  3. Step 3: Cross multiply
    8,901.95x = 12,280.21 × 8,268.73
  4. Step 4: Simplify right side
    8,901.95x = 101,541,689.46
  5. Step 5: Solve for x
    x = 101,541,689.46/8,901.95
  6. Step 6: Final answer
    x = 11,406.69

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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.