Home / 8,225.40-12,339.12-2,679.30

Finding the Fourth Proportional to 8,225.40, 12,339.12 and 2,679.30

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Solution

The fourth proportional to 8,225.40, 12,339.12 and 2,679.30 is: 4,019.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,225.40 : 12,339.12 = 2,679.30 : x
  2. Step 2: Convert to fraction form
    8,225.40/12,339.12 = 2,679.30/x
  3. Step 3: Cross multiply
    8,225.40x = 12,339.12 × 2,679.30
  4. Step 4: Simplify right side
    8,225.40x = 33,060,245.20
  5. Step 5: Solve for x
    x = 33,060,245.20/8,225.40
  6. Step 6: Final answer
    x = 4,019.29

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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.