Home / 8,122.08-12,181.50-2,278.74

Finding the Fourth Proportional to 8,122.08, 12,181.50 and 2,278.74

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Solution

The fourth proportional to 8,122.08, 12,181.50 and 2,278.74 is: 3,417.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.08 : 12,181.50 = 2,278.74 : x
  2. Step 2: Convert to fraction form
    8,122.08/12,181.50 = 2,278.74/x
  3. Step 3: Cross multiply
    8,122.08x = 12,181.50 × 2,278.74
  4. Step 4: Simplify right side
    8,122.08x = 27,758,471.31
  5. Step 5: Solve for x
    x = 27,758,471.31/8,122.08
  6. Step 6: Final answer
    x = 3,417.66

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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.