Home / 2,869.70-3,960.09-1,691.55

Finding the Fourth Proportional to 2,869.70, 3,960.09 and 1,691.55

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Solution

The fourth proportional to 2,869.70, 3,960.09 and 1,691.55 is: 2,334.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.70 : 3,960.09 = 1,691.55 : x
  2. Step 2: Convert to fraction form
    2,869.70/3,960.09 = 1,691.55/x
  3. Step 3: Cross multiply
    2,869.70x = 3,960.09 × 1,691.55
  4. Step 4: Simplify right side
    2,869.70x = 6,698,690.24
  5. Step 5: Solve for x
    x = 6,698,690.24/2,869.70
  6. Step 6: Final answer
    x = 2,334.29

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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.