Home / 3,399.60-4,689.45-2,138.65

Finding the Fourth Proportional to 3,399.60, 4,689.45 and 2,138.65

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Solution

The fourth proportional to 3,399.60, 4,689.45 and 2,138.65 is: 2,950.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.60 : 4,689.45 = 2,138.65 : x
  2. Step 2: Convert to fraction form
    3,399.60/4,689.45 = 2,138.65/x
  3. Step 3: Cross multiply
    3,399.60x = 4,689.45 × 2,138.65
  4. Step 4: Simplify right side
    3,399.60x = 10,029,092.24
  5. Step 5: Solve for x
    x = 10,029,092.24/3,399.60
  6. Step 6: Final answer
    x = 2,950.08

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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.