Home / 3,991.78-5,508.30-2,223.35

Finding the Fourth Proportional to 3,991.78, 5,508.30 and 2,223.35

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Solution

The fourth proportional to 3,991.78, 5,508.30 and 2,223.35 is: 3,068.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.78 : 5,508.30 = 2,223.35 : x
  2. Step 2: Convert to fraction form
    3,991.78/5,508.30 = 2,223.35/x
  3. Step 3: Cross multiply
    3,991.78x = 5,508.30 × 2,223.35
  4. Step 4: Simplify right side
    3,991.78x = 12,246,880.26
  5. Step 5: Solve for x
    x = 12,246,880.26/3,991.78
  6. Step 6: Final answer
    x = 3,068.02

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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.