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Finding the Fourth Proportional to 3,398.06, 4,689.34 and 1,982.74

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Solution

The fourth proportional to 3,398.06, 4,689.34 and 1,982.74 is: 2,736.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.06 : 4,689.34 = 1,982.74 : x
  2. Step 2: Convert to fraction form
    3,398.06/4,689.34 = 1,982.74/x
  3. Step 3: Cross multiply
    3,398.06x = 4,689.34 × 1,982.74
  4. Step 4: Simplify right side
    3,398.06x = 9,297,741.99
  5. Step 5: Solve for x
    x = 9,297,741.99/3,398.06
  6. Step 6: Final answer
    x = 2,736.19

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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.