Home / 2,869.32-3,958.80-1,689.96

Finding the Fourth Proportional to 2,869.32, 3,958.80 and 1,689.96

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Solution

The fourth proportional to 2,869.32, 3,958.80 and 1,689.96 is: 2,331.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.32 : 3,958.80 = 1,689.96 : x
  2. Step 2: Convert to fraction form
    2,869.32/3,958.80 = 1,689.96/x
  3. Step 3: Cross multiply
    2,869.32x = 3,958.80 × 1,689.96
  4. Step 4: Simplify right side
    2,869.32x = 6,690,213.65
  5. Step 5: Solve for x
    x = 6,690,213.65/2,869.32
  6. Step 6: Final answer
    x = 2,331.64

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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.