Home / 1,972.58-2,722.35-1,186.61

Finding the Fourth Proportional to 1,972.58, 2,722.35 and 1,186.61

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Solution

The fourth proportional to 1,972.58, 2,722.35 and 1,186.61 is: 1,637.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.58 : 2,722.35 = 1,186.61 : x
  2. Step 2: Convert to fraction form
    1,972.58/2,722.35 = 1,186.61/x
  3. Step 3: Cross multiply
    1,972.58x = 2,722.35 × 1,186.61
  4. Step 4: Simplify right side
    1,972.58x = 3,230,367.73
  5. Step 5: Solve for x
    x = 3,230,367.73/1,972.58
  6. Step 6: Final answer
    x = 1,637.64

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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.