Home / 8,169.47-12,255.79-2,622.38

Finding the Fourth Proportional to 8,169.47, 12,255.79 and 2,622.38

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Solution

The fourth proportional to 8,169.47, 12,255.79 and 2,622.38 is: 3,934.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.47 : 12,255.79 = 2,622.38 : x
  2. Step 2: Convert to fraction form
    8,169.47/12,255.79 = 2,622.38/x
  3. Step 3: Cross multiply
    8,169.47x = 12,255.79 × 2,622.38
  4. Step 4: Simplify right side
    8,169.47x = 32,139,362.66
  5. Step 5: Solve for x
    x = 32,139,362.66/8,169.47
  6. Step 6: Final answer
    x = 3,934.08

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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.