Home / 3,860.78-5,327.40-2,741.31

Finding the Fourth Proportional to 3,860.78, 5,327.40 and 2,741.31

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Solution

The fourth proportional to 3,860.78, 5,327.40 and 2,741.31 is: 3,782.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.78 : 5,327.40 = 2,741.31 : x
  2. Step 2: Convert to fraction form
    3,860.78/5,327.40 = 2,741.31/x
  3. Step 3: Cross multiply
    3,860.78x = 5,327.40 × 2,741.31
  4. Step 4: Simplify right side
    3,860.78x = 14,604,019.57
  5. Step 5: Solve for x
    x = 14,604,019.57/3,860.78
  6. Step 6: Final answer
    x = 3,782.66

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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.