Home / 3,828.49-5,282.89-2,149.66

Finding the Fourth Proportional to 3,828.49, 5,282.89 and 2,149.66

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Solution

The fourth proportional to 3,828.49, 5,282.89 and 2,149.66 is: 2,966.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.49 : 5,282.89 = 2,149.66 : x
  2. Step 2: Convert to fraction form
    3,828.49/5,282.89 = 2,149.66/x
  3. Step 3: Cross multiply
    3,828.49x = 5,282.89 × 2,149.66
  4. Step 4: Simplify right side
    3,828.49x = 11,356,418.55
  5. Step 5: Solve for x
    x = 11,356,418.55/3,828.49
  6. Step 6: Final answer
    x = 2,966.29

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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.