Home / 3,481.85-4,806.83-2,689.28

Finding the Fourth Proportional to 3,481.85, 4,806.83 and 2,689.28

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Solution

The fourth proportional to 3,481.85, 4,806.83 and 2,689.28 is: 3,712.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.85 : 4,806.83 = 2,689.28 : x
  2. Step 2: Convert to fraction form
    3,481.85/4,806.83 = 2,689.28/x
  3. Step 3: Cross multiply
    3,481.85x = 4,806.83 × 2,689.28
  4. Step 4: Simplify right side
    3,481.85x = 12,926,898.34
  5. Step 5: Solve for x
    x = 12,926,898.34/3,481.85
  6. Step 6: Final answer
    x = 3,712.65

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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.