Home / 8,181.52-12,272.28-2,986.20

Finding the Fourth Proportional to 8,181.52, 12,272.28 and 2,986.20

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Solution

The fourth proportional to 8,181.52, 12,272.28 and 2,986.20 is: 4,479.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.52 : 12,272.28 = 2,986.20 : x
  2. Step 2: Convert to fraction form
    8,181.52/12,272.28 = 2,986.20/x
  3. Step 3: Cross multiply
    8,181.52x = 12,272.28 × 2,986.20
  4. Step 4: Simplify right side
    8,181.52x = 36,647,482.54
  5. Step 5: Solve for x
    x = 36,647,482.54/8,181.52
  6. Step 6: Final answer
    x = 4,479.30

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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.