Home / 8,091.78-12,139.70-2,544.90

Finding the Fourth Proportional to 8,091.78, 12,139.70 and 2,544.90

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Solution

The fourth proportional to 8,091.78, 12,139.70 and 2,544.90 is: 3,817.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,091.78 : 12,139.70 = 2,544.90 : x
  2. Step 2: Convert to fraction form
    8,091.78/12,139.70 = 2,544.90/x
  3. Step 3: Cross multiply
    8,091.78x = 12,139.70 × 2,544.90
  4. Step 4: Simplify right side
    8,091.78x = 30,894,322.53
  5. Step 5: Solve for x
    x = 30,894,322.53/8,091.78
  6. Step 6: Final answer
    x = 3,817.99

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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.