Home / 8,279.75-12,390.44-6,316.31

Finding the Fourth Proportional to 8,279.75, 12,390.44 and 6,316.31

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Solution

The fourth proportional to 8,279.75, 12,390.44 and 6,316.31 is: 9,452.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.75 : 12,390.44 = 6,316.31 : x
  2. Step 2: Convert to fraction form
    8,279.75/12,390.44 = 6,316.31/x
  3. Step 3: Cross multiply
    8,279.75x = 12,390.44 × 6,316.31
  4. Step 4: Simplify right side
    8,279.75x = 78,261,766.54
  5. Step 5: Solve for x
    x = 78,261,766.54/8,279.75
  6. Step 6: Final answer
    x = 9,452.20

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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.