Home / 3,819.12-5,269.18-2,140.30

Finding the Fourth Proportional to 3,819.12, 5,269.18 and 2,140.30

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Solution

The fourth proportional to 3,819.12, 5,269.18 and 2,140.30 is: 2,952.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,819.12 : 5,269.18 = 2,140.30 : x
  2. Step 2: Convert to fraction form
    3,819.12/5,269.18 = 2,140.30/x
  3. Step 3: Cross multiply
    3,819.12x = 5,269.18 × 2,140.30
  4. Step 4: Simplify right side
    3,819.12x = 11,277,625.95
  5. Step 5: Solve for x
    x = 11,277,625.95/3,819.12
  6. Step 6: Final answer
    x = 2,952.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.