Home / 3,398.27-4,689-1,906.25

Finding the Fourth Proportional to 3,398.27, 4,689 and 1,906.25

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Solution

The fourth proportional to 3,398.27, 4,689 and 1,906.25 is: 2,630.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.27 : 4,689 = 1,906.25 : x
  2. Step 2: Convert to fraction form
    3,398.27/4,689 = 1,906.25/x
  3. Step 3: Cross multiply
    3,398.27x = 4,689 × 1,906.25
  4. Step 4: Simplify right side
    3,398.27x = 8,938,382.81
  5. Step 5: Solve for x
    x = 8,938,382.81/3,398.27
  6. Step 6: Final answer
    x = 2,630.28

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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.