Home / 1,972.14-2,722.05-1,186.65

Finding the Fourth Proportional to 1,972.14, 2,722.05 and 1,186.65

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Solution

The fourth proportional to 1,972.14, 2,722.05 and 1,186.65 is: 1,637.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.14 : 2,722.05 = 1,186.65 : x
  2. Step 2: Convert to fraction form
    1,972.14/2,722.05 = 1,186.65/x
  3. Step 3: Cross multiply
    1,972.14x = 2,722.05 × 1,186.65
  4. Step 4: Simplify right side
    1,972.14x = 3,230,120.63
  5. Step 5: Solve for x
    x = 3,230,120.63/1,972.14
  6. Step 6: Final answer
    x = 1,637.88

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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.