Home / 8,649.40-12,974.30-3,103.12

Finding the Fourth Proportional to 8,649.40, 12,974.30 and 3,103.12

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Solution

The fourth proportional to 8,649.40, 12,974.30 and 3,103.12 is: 4,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.40 : 12,974.30 = 3,103.12 : x
  2. Step 2: Convert to fraction form
    8,649.40/12,974.30 = 3,103.12/x
  3. Step 3: Cross multiply
    8,649.40x = 12,974.30 × 3,103.12
  4. Step 4: Simplify right side
    8,649.40x = 40,260,809.82
  5. Step 5: Solve for x
    x = 40,260,809.82/8,649.40
  6. Step 6: Final answer
    x = 4,654.75

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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.