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Finding the Fourth Proportional to 8,123.15, 12,161.00 and 7,344.95

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Solution

The fourth proportional to 8,123.15, 12,161.00 and 7,344.95 is: 10,995.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.15 : 12,161.00 = 7,344.95 : x
  2. Step 2: Convert to fraction form
    8,123.15/12,161.00 = 7,344.95/x
  3. Step 3: Cross multiply
    8,123.15x = 12,161.00 × 7,344.95
  4. Step 4: Simplify right side
    8,123.15x = 89,321,894.51
  5. Step 5: Solve for x
    x = 89,321,894.51/8,123.15
  6. Step 6: Final answer
    x = 10,995.96

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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.