Home / 3,934.26-5,428.98-2,165.49

Finding the Fourth Proportional to 3,934.26, 5,428.98 and 2,165.49

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Solution

The fourth proportional to 3,934.26, 5,428.98 and 2,165.49 is: 2,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.26 : 5,428.98 = 2,165.49 : x
  2. Step 2: Convert to fraction form
    3,934.26/5,428.98 = 2,165.49/x
  3. Step 3: Cross multiply
    3,934.26x = 5,428.98 × 2,165.49
  4. Step 4: Simplify right side
    3,934.26x = 11,756,401.90
  5. Step 5: Solve for x
    x = 11,756,401.90/3,934.26
  6. Step 6: Final answer
    x = 2,988.21

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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.