Home / 3,991.97-5,508.86-2,223.59

Finding the Fourth Proportional to 3,991.97, 5,508.86 and 2,223.59

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Solution

The fourth proportional to 3,991.97, 5,508.86 and 2,223.59 is: 3,068.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.97 : 5,508.86 = 2,223.59 : x
  2. Step 2: Convert to fraction form
    3,991.97/5,508.86 = 2,223.59/x
  3. Step 3: Cross multiply
    3,991.97x = 5,508.86 × 2,223.59
  4. Step 4: Simplify right side
    3,991.97x = 12,249,418.46
  5. Step 5: Solve for x
    x = 12,249,418.46/3,991.97
  6. Step 6: Final answer
    x = 3,068.52

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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.