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Finding the Fourth Proportional to 8,081.71, 12,123.95 and 4,135.56

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Solution

The fourth proportional to 8,081.71, 12,123.95 and 4,135.56 is: 6,204.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,081.71 : 12,123.95 = 4,135.56 : x
  2. Step 2: Convert to fraction form
    8,081.71/12,123.95 = 4,135.56/x
  3. Step 3: Cross multiply
    8,081.71x = 12,123.95 × 4,135.56
  4. Step 4: Simplify right side
    8,081.71x = 50,139,256.52
  5. Step 5: Solve for x
    x = 50,139,256.52/8,081.71
  6. Step 6: Final answer
    x = 6,204.04

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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.