Home / 1,981.66-2,734.70-1,097.45

Finding the Fourth Proportional to 1,981.66, 2,734.70 and 1,097.45

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Solution

The fourth proportional to 1,981.66, 2,734.70 and 1,097.45 is: 1,514.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.66 : 2,734.70 = 1,097.45 : x
  2. Step 2: Convert to fraction form
    1,981.66/2,734.70 = 1,097.45/x
  3. Step 3: Cross multiply
    1,981.66x = 2,734.70 × 1,097.45
  4. Step 4: Simplify right side
    1,981.66x = 3,001,183.53
  5. Step 5: Solve for x
    x = 3,001,183.53/1,981.66
  6. Step 6: Final answer
    x = 1,514.48

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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.