Home / 3,934.16-5,429.29-2,165.90

Finding the Fourth Proportional to 3,934.16, 5,429.29 and 2,165.90

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Solution

The fourth proportional to 3,934.16, 5,429.29 and 2,165.90 is: 2,989.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.16 : 5,429.29 = 2,165.90 : x
  2. Step 2: Convert to fraction form
    3,934.16/5,429.29 = 2,165.90/x
  3. Step 3: Cross multiply
    3,934.16x = 5,429.29 × 2,165.90
  4. Step 4: Simplify right side
    3,934.16x = 11,759,299.21
  5. Step 5: Solve for x
    x = 11,759,299.21/3,934.16
  6. Step 6: Final answer
    x = 2,989.02

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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.