Home / 3,518.80-5,275.59-2,131.87

Finding the Fourth Proportional to 3,518.80, 5,275.59 and 2,131.87

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Solution

The fourth proportional to 3,518.80, 5,275.59 and 2,131.87 is: 3,196.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.80 : 5,275.59 = 2,131.87 : x
  2. Step 2: Convert to fraction form
    3,518.80/5,275.59 = 2,131.87/x
  3. Step 3: Cross multiply
    3,518.80x = 5,275.59 × 2,131.87
  4. Step 4: Simplify right side
    3,518.80x = 11,246,872.05
  5. Step 5: Solve for x
    x = 11,246,872.05/3,518.80
  6. Step 6: Final answer
    x = 3,196.22

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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.