Home / 5,403.88-7,458.18-3,911.25

Finding the Fourth Proportional to 5,403.88, 7,458.18 and 3,911.25

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Solution

The fourth proportional to 5,403.88, 7,458.18 and 3,911.25 is: 5,398.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.88 : 7,458.18 = 3,911.25 : x
  2. Step 2: Convert to fraction form
    5,403.88/7,458.18 = 3,911.25/x
  3. Step 3: Cross multiply
    5,403.88x = 7,458.18 × 3,911.25
  4. Step 4: Simplify right side
    5,403.88x = 29,170,819.83
  5. Step 5: Solve for x
    x = 29,170,819.83/5,403.88
  6. Step 6: Final answer
    x = 5,398.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.