Home / 1,327.86-2,001.79-1,238.69

Finding the Fourth Proportional to 1,327.86, 2,001.79 and 1,238.69

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Solution

The fourth proportional to 1,327.86, 2,001.79 and 1,238.69 is: 1,867.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.86 : 2,001.79 = 1,238.69 : x
  2. Step 2: Convert to fraction form
    1,327.86/2,001.79 = 1,238.69/x
  3. Step 3: Cross multiply
    1,327.86x = 2,001.79 × 1,238.69
  4. Step 4: Simplify right side
    1,327.86x = 2,479,587.25
  5. Step 5: Solve for x
    x = 2,479,587.25/1,327.86
  6. Step 6: Final answer
    x = 1,867.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.