Home / 1,972.14-2,721.45-1,186.03

Finding the Fourth Proportional to 1,972.14, 2,721.45 and 1,186.03

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Solution

The fourth proportional to 1,972.14, 2,721.45 and 1,186.03 is: 1,636.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.14 : 2,721.45 = 1,186.03 : x
  2. Step 2: Convert to fraction form
    1,972.14/2,721.45 = 1,186.03/x
  3. Step 3: Cross multiply
    1,972.14x = 2,721.45 × 1,186.03
  4. Step 4: Simplify right side
    1,972.14x = 3,227,721.34
  5. Step 5: Solve for x
    x = 3,227,721.34/1,972.14
  6. Step 6: Final answer
    x = 1,636.66

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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.