Home / 2,508.20-3,455.28-2,109.87

Finding the Fourth Proportional to 2,508.20, 3,455.28 and 2,109.87

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Solution

The fourth proportional to 2,508.20, 3,455.28 and 2,109.87 is: 2,906.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,508.20 : 3,455.28 = 2,109.87 : x
  2. Step 2: Convert to fraction form
    2,508.20/3,455.28 = 2,109.87/x
  3. Step 3: Cross multiply
    2,508.20x = 3,455.28 × 2,109.87
  4. Step 4: Simplify right side
    2,508.20x = 7,290,191.61
  5. Step 5: Solve for x
    x = 7,290,191.61/2,508.20
  6. Step 6: Final answer
    x = 2,906.54

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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.