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Finding the Fourth Proportional to 3,404.88, 5,108.40 and 1,556.80

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Solution

The fourth proportional to 3,404.88, 5,108.40 and 1,556.80 is: 2,335.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.88 : 5,108.40 = 1,556.80 : x
  2. Step 2: Convert to fraction form
    3,404.88/5,108.40 = 1,556.80/x
  3. Step 3: Cross multiply
    3,404.88x = 5,108.40 × 1,556.80
  4. Step 4: Simplify right side
    3,404.88x = 7,952,757.12
  5. Step 5: Solve for x
    x = 7,952,757.12/3,404.88
  6. Step 6: Final answer
    x = 2,335.69

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1.5x scale

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.