Home / 3,398.14-4,689.45-1,905.97

Finding the Fourth Proportional to 3,398.14, 4,689.45 and 1,905.97

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Solution

The fourth proportional to 3,398.14, 4,689.45 and 1,905.97 is: 2,630.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.14 : 4,689.45 = 1,905.97 : x
  2. Step 2: Convert to fraction form
    3,398.14/4,689.45 = 1,905.97/x
  3. Step 3: Cross multiply
    3,398.14x = 4,689.45 × 1,905.97
  4. Step 4: Simplify right side
    3,398.14x = 8,937,951.02
  5. Step 5: Solve for x
    x = 8,937,951.02/3,398.14
  6. Step 6: Final answer
    x = 2,630.25

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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.