Home / 3,468.64-5,197.59-1,387.72

Finding the Fourth Proportional to 3,468.64, 5,197.59 and 1,387.72

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Solution

The fourth proportional to 3,468.64, 5,197.59 and 1,387.72 is: 2,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,468.64 : 5,197.59 = 1,387.72 : x
  2. Step 2: Convert to fraction form
    3,468.64/5,197.59 = 1,387.72/x
  3. Step 3: Cross multiply
    3,468.64x = 5,197.59 × 1,387.72
  4. Step 4: Simplify right side
    3,468.64x = 7,212,799.59
  5. Step 5: Solve for x
    x = 7,212,799.59/3,468.64
  6. Step 6: Final answer
    x = 2,079.43

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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.