Home / 3,398.21-4,689.47-1,906.16

Finding the Fourth Proportional to 3,398.21, 4,689.47 and 1,906.16

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Solution

The fourth proportional to 3,398.21, 4,689.47 and 1,906.16 is: 2,630.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.21 : 4,689.47 = 1,906.16 : x
  2. Step 2: Convert to fraction form
    3,398.21/4,689.47 = 1,906.16/x
  3. Step 3: Cross multiply
    3,398.21x = 4,689.47 × 1,906.16
  4. Step 4: Simplify right side
    3,398.21x = 8,938,847.16
  5. Step 5: Solve for x
    x = 8,938,847.16/3,398.21
  6. Step 6: Final answer
    x = 2,630.46

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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.