Home / 3,927.79-5,420.62-2,435.77

Finding the Fourth Proportional to 3,927.79, 5,420.62 and 2,435.77

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Solution

The fourth proportional to 3,927.79, 5,420.62 and 2,435.77 is: 3,361.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.79 : 5,420.62 = 2,435.77 : x
  2. Step 2: Convert to fraction form
    3,927.79/5,420.62 = 2,435.77/x
  3. Step 3: Cross multiply
    3,927.79x = 5,420.62 × 2,435.77
  4. Step 4: Simplify right side
    3,927.79x = 13,203,393.40
  5. Step 5: Solve for x
    x = 13,203,393.40/3,927.79
  6. Step 6: Final answer
    x = 3,361.53

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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.