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Finding the Fourth Proportional to 8,660.05, 13,004.76 and 8,216.17

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Solution

The fourth proportional to 8,660.05, 13,004.76 and 8,216.17 is: 12,338.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,660.05 : 13,004.76 = 8,216.17 : x
  2. Step 2: Convert to fraction form
    8,660.05/13,004.76 = 8,216.17/x
  3. Step 3: Cross multiply
    8,660.05x = 13,004.76 × 8,216.17
  4. Step 4: Simplify right side
    8,660.05x = 106,849,318.97
  5. Step 5: Solve for x
    x = 106,849,318.97/8,660.05
  6. Step 6: Final answer
    x = 12,338.19

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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.