Home / 3,398.84-4,685.69-2,906.72

Finding the Fourth Proportional to 3,398.84, 4,685.69 and 2,906.72

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Solution

The fourth proportional to 3,398.84, 4,685.69 and 2,906.72 is: 4,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.84 : 4,685.69 = 2,906.72 : x
  2. Step 2: Convert to fraction form
    3,398.84/4,685.69 = 2,906.72/x
  3. Step 3: Cross multiply
    3,398.84x = 4,685.69 × 2,906.72
  4. Step 4: Simplify right side
    3,398.84x = 13,619,972.68
  5. Step 5: Solve for x
    x = 13,619,972.68/3,398.84
  6. Step 6: Final answer
    x = 4,007.25

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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.