Home / 2,642.48-3,963.72-1,103.60

Finding the Fourth Proportional to 2,642.48, 3,963.72 and 1,103.60

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Solution

The fourth proportional to 2,642.48, 3,963.72 and 1,103.60 is: 1,655.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.48 : 3,963.72 = 1,103.60 : x
  2. Step 2: Convert to fraction form
    2,642.48/3,963.72 = 1,103.60/x
  3. Step 3: Cross multiply
    2,642.48x = 3,963.72 × 1,103.60
  4. Step 4: Simplify right side
    2,642.48x = 4,374,361.39
  5. Step 5: Solve for x
    x = 4,374,361.39/2,642.48
  6. Step 6: Final answer
    x = 1,655.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.