Home / 3,398.22-4,689.72-1,906.08

Finding the Fourth Proportional to 3,398.22, 4,689.72 and 1,906.08

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Solution

The fourth proportional to 3,398.22, 4,689.72 and 1,906.08 is: 2,630.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.22 : 4,689.72 = 1,906.08 : x
  2. Step 2: Convert to fraction form
    3,398.22/4,689.72 = 1,906.08/x
  3. Step 3: Cross multiply
    3,398.22x = 4,689.72 × 1,906.08
  4. Step 4: Simplify right side
    3,398.22x = 8,938,981.50
  5. Step 5: Solve for x
    x = 8,938,981.50/3,398.22
  6. Step 6: Final answer
    x = 2,630.49

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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.