Home / 8,116.20-12,181.98-4,223.40

Finding the Fourth Proportional to 8,116.20, 12,181.98 and 4,223.40

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Solution

The fourth proportional to 8,116.20, 12,181.98 and 4,223.40 is: 6,339.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,116.20 : 12,181.98 = 4,223.40 : x
  2. Step 2: Convert to fraction form
    8,116.20/12,181.98 = 4,223.40/x
  3. Step 3: Cross multiply
    8,116.20x = 12,181.98 × 4,223.40
  4. Step 4: Simplify right side
    8,116.20x = 51,449,374.33
  5. Step 5: Solve for x
    x = 51,449,374.33/8,116.20
  6. Step 6: Final answer
    x = 6,339.10

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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.