Home / 8,178.29-12,273.55-3,181.45

Finding the Fourth Proportional to 8,178.29, 12,273.55 and 3,181.45

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Solution

The fourth proportional to 8,178.29, 12,273.55 and 3,181.45 is: 4,774.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.29 : 12,273.55 = 3,181.45 : x
  2. Step 2: Convert to fraction form
    8,178.29/12,273.55 = 3,181.45/x
  3. Step 3: Cross multiply
    8,178.29x = 12,273.55 × 3,181.45
  4. Step 4: Simplify right side
    8,178.29x = 39,047,713.49
  5. Step 5: Solve for x
    x = 39,047,713.49/8,178.29
  6. Step 6: Final answer
    x = 4,774.56

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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.