Home / 2,739.84-3,781.30-1,561.09

Finding the Fourth Proportional to 2,739.84, 3,781.30 and 1,561.09

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Solution

The fourth proportional to 2,739.84, 3,781.30 and 1,561.09 is: 2,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.84 : 3,781.30 = 1,561.09 : x
  2. Step 2: Convert to fraction form
    2,739.84/3,781.30 = 1,561.09/x
  3. Step 3: Cross multiply
    2,739.84x = 3,781.30 × 1,561.09
  4. Step 4: Simplify right side
    2,739.84x = 5,902,936.26
  5. Step 5: Solve for x
    x = 5,902,936.26/2,739.84
  6. Step 6: Final answer
    x = 2,154.48

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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.