Home / 8,298.78-12,446.73-2,142.78

Finding the Fourth Proportional to 8,298.78, 12,446.73 and 2,142.78

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Solution

The fourth proportional to 8,298.78, 12,446.73 and 2,142.78 is: 3,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,298.78 : 12,446.73 = 2,142.78 : x
  2. Step 2: Convert to fraction form
    8,298.78/12,446.73 = 2,142.78/x
  3. Step 3: Cross multiply
    8,298.78x = 12,446.73 × 2,142.78
  4. Step 4: Simplify right side
    8,298.78x = 26,670,604.11
  5. Step 5: Solve for x
    x = 26,670,604.11/8,298.78
  6. Step 6: Final answer
    x = 3,213.80

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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.