Home / 8,189.28-12,273.08-2,990.16

Finding the Fourth Proportional to 8,189.28, 12,273.08 and 2,990.16

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Solution

The fourth proportional to 8,189.28, 12,273.08 and 2,990.16 is: 4,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,189.28 : 12,273.08 = 2,990.16 : x
  2. Step 2: Convert to fraction form
    8,189.28/12,273.08 = 2,990.16/x
  3. Step 3: Cross multiply
    8,189.28x = 12,273.08 × 2,990.16
  4. Step 4: Simplify right side
    8,189.28x = 36,698,472.89
  5. Step 5: Solve for x
    x = 36,698,472.89/8,189.28
  6. Step 6: Final answer
    x = 4,481.28

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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.