Home / 8,517.40-12,768.60-3,319.63

Finding the Fourth Proportional to 8,517.40, 12,768.60 and 3,319.63

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Solution

The fourth proportional to 8,517.40, 12,768.60 and 3,319.63 is: 4,976.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.40 : 12,768.60 = 3,319.63 : x
  2. Step 2: Convert to fraction form
    8,517.40/12,768.60 = 3,319.63/x
  3. Step 3: Cross multiply
    8,517.40x = 12,768.60 × 3,319.63
  4. Step 4: Simplify right side
    8,517.40x = 42,387,027.62
  5. Step 5: Solve for x
    x = 42,387,027.62/8,517.40
  6. Step 6: Final answer
    x = 4,976.52

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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.