Home / 3,378.31-5,071.11-2,689.42

Finding the Fourth Proportional to 3,378.31, 5,071.11 and 2,689.42

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Solution

The fourth proportional to 3,378.31, 5,071.11 and 2,689.42 is: 4,037.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.31 : 5,071.11 = 2,689.42 : x
  2. Step 2: Convert to fraction form
    3,378.31/5,071.11 = 2,689.42/x
  3. Step 3: Cross multiply
    3,378.31x = 5,071.11 × 2,689.42
  4. Step 4: Simplify right side
    3,378.31x = 13,638,344.66
  5. Step 5: Solve for x
    x = 13,638,344.66/3,378.31
  6. Step 6: Final answer
    x = 4,037.03

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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.