Home / 3,934.50-5,429.26-2,166

Finding the Fourth Proportional to 3,934.50, 5,429.26 and 2,166

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Solution

The fourth proportional to 3,934.50, 5,429.26 and 2,166 is: 2,988.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.50 : 5,429.26 = 2,166 : x
  2. Step 2: Convert to fraction form
    3,934.50/5,429.26 = 2,166/x
  3. Step 3: Cross multiply
    3,934.50x = 5,429.26 × 2,166
  4. Step 4: Simplify right side
    3,934.50x = 11,759,777.16
  5. Step 5: Solve for x
    x = 11,759,777.16/3,934.50
  6. Step 6: Final answer
    x = 2,988.89

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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.