Home / 3,398.51-4,690.20-1,906.56

Finding the Fourth Proportional to 3,398.51, 4,690.20 and 1,906.56

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Solution

The fourth proportional to 3,398.51, 4,690.20 and 1,906.56 is: 2,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.51 : 4,690.20 = 1,906.56 : x
  2. Step 2: Convert to fraction form
    3,398.51/4,690.20 = 1,906.56/x
  3. Step 3: Cross multiply
    3,398.51x = 4,690.20 × 1,906.56
  4. Step 4: Simplify right side
    3,398.51x = 8,942,168.05
  5. Step 5: Solve for x
    x = 8,942,168.05/3,398.51
  6. Step 6: Final answer
    x = 2,631.20

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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.