Home / 3,400.36-4,690.94-2,221

Finding the Fourth Proportional to 3,400.36, 4,690.94 and 2,221

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Solution

The fourth proportional to 3,400.36, 4,690.94 and 2,221 is: 3,063.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.36 : 4,690.94 = 2,221 : x
  2. Step 2: Convert to fraction form
    3,400.36/4,690.94 = 2,221/x
  3. Step 3: Cross multiply
    3,400.36x = 4,690.94 × 2,221
  4. Step 4: Simplify right side
    3,400.36x = 10,418,577.74
  5. Step 5: Solve for x
    x = 10,418,577.74/3,400.36
  6. Step 6: Final answer
    x = 3,063.96

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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.