Home / 8,078.78-12,118.18-2,532.56

Finding the Fourth Proportional to 8,078.78, 12,118.18 and 2,532.56

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Solution

The fourth proportional to 8,078.78, 12,118.18 and 2,532.56 is: 3,798.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.78 : 12,118.18 = 2,532.56 : x
  2. Step 2: Convert to fraction form
    8,078.78/12,118.18 = 2,532.56/x
  3. Step 3: Cross multiply
    8,078.78x = 12,118.18 × 2,532.56
  4. Step 4: Simplify right side
    8,078.78x = 30,690,017.94
  5. Step 5: Solve for x
    x = 30,690,017.94/8,078.78
  6. Step 6: Final answer
    x = 3,798.84

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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.