Home / 1,981.84-2,975.49-1,008.61

Finding the Fourth Proportional to 1,981.84, 2,975.49 and 1,008.61

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Solution

The fourth proportional to 1,981.84, 2,975.49 and 1,008.61 is: 1,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.84 : 2,975.49 = 1,008.61 : x
  2. Step 2: Convert to fraction form
    1,981.84/2,975.49 = 1,008.61/x
  3. Step 3: Cross multiply
    1,981.84x = 2,975.49 × 1,008.61
  4. Step 4: Simplify right side
    1,981.84x = 3,001,108.97
  5. Step 5: Solve for x
    x = 3,001,108.97/1,981.84
  6. Step 6: Final answer
    x = 1,514.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.