Home / 8,279.20-12,418.80-3,346.30

Finding the Fourth Proportional to 8,279.20, 12,418.80 and 3,346.30

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Solution

The fourth proportional to 8,279.20, 12,418.80 and 3,346.30 is: 5,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.20 : 12,418.80 = 3,346.30 : x
  2. Step 2: Convert to fraction form
    8,279.20/12,418.80 = 3,346.30/x
  3. Step 3: Cross multiply
    8,279.20x = 12,418.80 × 3,346.30
  4. Step 4: Simplify right side
    8,279.20x = 41,557,030.44
  5. Step 5: Solve for x
    x = 41,557,030.44/8,279.20
  6. Step 6: Final answer
    x = 5,019.45

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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.