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Finding the Fourth Proportional to 1,972.58, 2,722.02 and 1,186.34

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Solution

The fourth proportional to 1,972.58, 2,722.02 and 1,186.34 is: 1,637.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.58 : 2,722.02 = 1,186.34 : x
  2. Step 2: Convert to fraction form
    1,972.58/2,722.02 = 1,186.34/x
  3. Step 3: Cross multiply
    1,972.58x = 2,722.02 × 1,186.34
  4. Step 4: Simplify right side
    1,972.58x = 3,229,241.21
  5. Step 5: Solve for x
    x = 3,229,241.21/1,972.58
  6. Step 6: Final answer
    x = 1,637.06

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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.