Home / 1,972.93-2,721.83-1,383.86

Finding the Fourth Proportional to 1,972.93, 2,721.83 and 1,383.86

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Solution

The fourth proportional to 1,972.93, 2,721.83 and 1,383.86 is: 1,909.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.93 : 2,721.83 = 1,383.86 : x
  2. Step 2: Convert to fraction form
    1,972.93/2,721.83 = 1,383.86/x
  3. Step 3: Cross multiply
    1,972.93x = 2,721.83 × 1,383.86
  4. Step 4: Simplify right side
    1,972.93x = 3,766,631.66
  5. Step 5: Solve for x
    x = 3,766,631.66/1,972.93
  6. Step 6: Final answer
    x = 1,909.16

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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.