Home / 2,781.33-3,837.13-1,786.45

Finding the Fourth Proportional to 2,781.33, 3,837.13 and 1,786.45

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Solution

The fourth proportional to 2,781.33, 3,837.13 and 1,786.45 is: 2,464.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.33 : 3,837.13 = 1,786.45 : x
  2. Step 2: Convert to fraction form
    2,781.33/3,837.13 = 1,786.45/x
  3. Step 3: Cross multiply
    2,781.33x = 3,837.13 × 1,786.45
  4. Step 4: Simplify right side
    2,781.33x = 6,854,840.89
  5. Step 5: Solve for x
    x = 6,854,840.89/2,781.33
  6. Step 6: Final answer
    x = 2,464.59

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1.5x scale

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.