Home / 3,781.78-5,215.36-2,365.01

Finding the Fourth Proportional to 3,781.78, 5,215.36 and 2,365.01

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Solution

The fourth proportional to 3,781.78, 5,215.36 and 2,365.01 is: 3,261.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.78 : 5,215.36 = 2,365.01 : x
  2. Step 2: Convert to fraction form
    3,781.78/5,215.36 = 2,365.01/x
  3. Step 3: Cross multiply
    3,781.78x = 5,215.36 × 2,365.01
  4. Step 4: Simplify right side
    3,781.78x = 12,334,378.55
  5. Step 5: Solve for x
    x = 12,334,378.55/3,781.78
  6. Step 6: Final answer
    x = 3,261.53

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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.