Home / 2,118.41-3,175.35-801.55

Finding the Fourth Proportional to 2,118.41, 3,175.35 and 801.55

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Solution

The fourth proportional to 2,118.41, 3,175.35 and 801.55 is: 1,201.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.41 : 3,175.35 = 801.55 : x
  2. Step 2: Convert to fraction form
    2,118.41/3,175.35 = 801.55/x
  3. Step 3: Cross multiply
    2,118.41x = 3,175.35 × 801.55
  4. Step 4: Simplify right side
    2,118.41x = 2,545,201.79
  5. Step 5: Solve for x
    x = 2,545,201.79/2,118.41
  6. Step 6: Final answer
    x = 1,201.47

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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.