Home / 3,398.56-4,689.30-2,221.36

Finding the Fourth Proportional to 3,398.56, 4,689.30 and 2,221.36

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Solution

The fourth proportional to 3,398.56, 4,689.30 and 2,221.36 is: 3,065.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.56 : 4,689.30 = 2,221.36 : x
  2. Step 2: Convert to fraction form
    3,398.56/4,689.30 = 2,221.36/x
  3. Step 3: Cross multiply
    3,398.56x = 4,689.30 × 2,221.36
  4. Step 4: Simplify right side
    3,398.56x = 10,416,623.45
  5. Step 5: Solve for x
    x = 10,416,623.45/3,398.56
  6. Step 6: Final answer
    x = 3,065.01

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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.