Home / 8,325.39-12,488.49-2,778.78

Finding the Fourth Proportional to 8,325.39, 12,488.49 and 2,778.78

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Solution

The fourth proportional to 8,325.39, 12,488.49 and 2,778.78 is: 4,168.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,325.39 : 12,488.49 = 2,778.78 : x
  2. Step 2: Convert to fraction form
    8,325.39/12,488.49 = 2,778.78/x
  3. Step 3: Cross multiply
    8,325.39x = 12,488.49 × 2,778.78
  4. Step 4: Simplify right side
    8,325.39x = 34,702,766.24
  5. Step 5: Solve for x
    x = 34,702,766.24/8,325.39
  6. Step 6: Final answer
    x = 4,168.31

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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.