Home / 3,898.36-5,378.20-2,481.68

Finding the Fourth Proportional to 3,898.36, 5,378.20 and 2,481.68

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Solution

The fourth proportional to 3,898.36, 5,378.20 and 2,481.68 is: 3,423.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.36 : 5,378.20 = 2,481.68 : x
  2. Step 2: Convert to fraction form
    3,898.36/5,378.20 = 2,481.68/x
  3. Step 3: Cross multiply
    3,898.36x = 5,378.20 × 2,481.68
  4. Step 4: Simplify right side
    3,898.36x = 13,346,971.38
  5. Step 5: Solve for x
    x = 13,346,971.38/3,898.36
  6. Step 6: Final answer
    x = 3,423.74

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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.