Home / 3,658.80-5,481.36-2,875.20

Finding the Fourth Proportional to 3,658.80, 5,481.36 and 2,875.20

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Solution

The fourth proportional to 3,658.80, 5,481.36 and 2,875.20 is: 4,307.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.80 : 5,481.36 = 2,875.20 : x
  2. Step 2: Convert to fraction form
    3,658.80/5,481.36 = 2,875.20/x
  3. Step 3: Cross multiply
    3,658.80x = 5,481.36 × 2,875.20
  4. Step 4: Simplify right side
    3,658.80x = 15,760,006.27
  5. Step 5: Solve for x
    x = 15,760,006.27/3,658.80
  6. Step 6: Final answer
    x = 4,307.42

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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.