Home / 1,972.36-2,721.86-1,175.56

Finding the Fourth Proportional to 1,972.36, 2,721.86 and 1,175.56

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Solution

The fourth proportional to 1,972.36, 2,721.86 and 1,175.56 is: 1,622.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.36 : 2,721.86 = 1,175.56 : x
  2. Step 2: Convert to fraction form
    1,972.36/2,721.86 = 1,175.56/x
  3. Step 3: Cross multiply
    1,972.36x = 2,721.86 × 1,175.56
  4. Step 4: Simplify right side
    1,972.36x = 3,199,709.74
  5. Step 5: Solve for x
    x = 3,199,709.74/1,972.36
  6. Step 6: Final answer
    x = 1,622.27

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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.