Home / 8,103.40-12,156.38-3,486.44

Finding the Fourth Proportional to 8,103.40, 12,156.38 and 3,486.44

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Solution

The fourth proportional to 8,103.40, 12,156.38 and 3,486.44 is: 5,230.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.40 : 12,156.38 = 3,486.44 : x
  2. Step 2: Convert to fraction form
    8,103.40/12,156.38 = 3,486.44/x
  3. Step 3: Cross multiply
    8,103.40x = 12,156.38 × 3,486.44
  4. Step 4: Simplify right side
    8,103.40x = 42,382,489.49
  5. Step 5: Solve for x
    x = 42,382,489.49/8,103.40
  6. Step 6: Final answer
    x = 5,230.21

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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.