Home / 3,398.09-4,689.36-1,981.82

Finding the Fourth Proportional to 3,398.09, 4,689.36 and 1,981.82

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Solution

The fourth proportional to 3,398.09, 4,689.36 and 1,981.82 is: 2,734.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.09 : 4,689.36 = 1,981.82 : x
  2. Step 2: Convert to fraction form
    3,398.09/4,689.36 = 1,981.82/x
  3. Step 3: Cross multiply
    3,398.09x = 4,689.36 × 1,981.82
  4. Step 4: Simplify right side
    3,398.09x = 9,293,479.16
  5. Step 5: Solve for x
    x = 9,293,479.16/3,398.09
  6. Step 6: Final answer
    x = 2,734.92

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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.