Home / 8,127.90-12,183.45-4,422.30

Finding the Fourth Proportional to 8,127.90, 12,183.45 and 4,422.30

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Solution

The fourth proportional to 8,127.90, 12,183.45 and 4,422.30 is: 6,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.90 : 12,183.45 = 4,422.30 : x
  2. Step 2: Convert to fraction form
    8,127.90/12,183.45 = 4,422.30/x
  3. Step 3: Cross multiply
    8,127.90x = 12,183.45 × 4,422.30
  4. Step 4: Simplify right side
    8,127.90x = 53,878,870.94
  5. Step 5: Solve for x
    x = 53,878,870.94/8,127.90
  6. Step 6: Final answer
    x = 6,628.88

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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.