Home / 3,992.31-5,508.88-2,223.68

Finding the Fourth Proportional to 3,992.31, 5,508.88 and 2,223.68

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Solution

The fourth proportional to 3,992.31, 5,508.88 and 2,223.68 is: 3,068.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,992.31 : 5,508.88 = 2,223.68 : x
  2. Step 2: Convert to fraction form
    3,992.31/5,508.88 = 2,223.68/x
  3. Step 3: Cross multiply
    3,992.31x = 5,508.88 × 2,223.68
  4. Step 4: Simplify right side
    3,992.31x = 12,249,953.17
  5. Step 5: Solve for x
    x = 12,249,953.17/3,992.31
  6. Step 6: Final answer
    x = 3,068.39

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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.