Home / 8,422.18-12,634.79-3,492.21

Finding the Fourth Proportional to 8,422.18, 12,634.79 and 3,492.21

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Solution

The fourth proportional to 8,422.18, 12,634.79 and 3,492.21 is: 5,238.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.18 : 12,634.79 = 3,492.21 : x
  2. Step 2: Convert to fraction form
    8,422.18/12,634.79 = 3,492.21/x
  3. Step 3: Cross multiply
    8,422.18x = 12,634.79 × 3,492.21
  4. Step 4: Simplify right side
    8,422.18x = 44,123,369.91
  5. Step 5: Solve for x
    x = 44,123,369.91/8,422.18
  6. Step 6: Final answer
    x = 5,238.95

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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.