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Finding the Fourth Proportional to 1,979.84, 2,732.28 and 1,095.74

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Solution

The fourth proportional to 1,979.84, 2,732.28 and 1,095.74 is: 1,512.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.84 : 2,732.28 = 1,095.74 : x
  2. Step 2: Convert to fraction form
    1,979.84/2,732.28 = 1,095.74/x
  3. Step 3: Cross multiply
    1,979.84x = 2,732.28 × 1,095.74
  4. Step 4: Simplify right side
    1,979.84x = 2,993,868.49
  5. Step 5: Solve for x
    x = 2,993,868.49/1,979.84
  6. Step 6: Final answer
    x = 1,512.18

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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.