Home / 4,138.60-6,209.88-2,578.18

Finding the Fourth Proportional to 4,138.60, 6,209.88 and 2,578.18

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Solution

The fourth proportional to 4,138.60, 6,209.88 and 2,578.18 is: 3,868.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.60 : 6,209.88 = 2,578.18 : x
  2. Step 2: Convert to fraction form
    4,138.60/6,209.88 = 2,578.18/x
  3. Step 3: Cross multiply
    4,138.60x = 6,209.88 × 2,578.18
  4. Step 4: Simplify right side
    4,138.60x = 16,010,188.42
  5. Step 5: Solve for x
    x = 16,010,188.42/4,138.60
  6. Step 6: Final answer
    x = 3,868.50

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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.