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Finding the Fourth Proportional to 3,404.88, 4,698.64 and 2,078.56

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Solution

The fourth proportional to 3,404.88, 4,698.64 and 2,078.56 is: 2,868.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.88 : 4,698.64 = 2,078.56 : x
  2. Step 2: Convert to fraction form
    3,404.88/4,698.64 = 2,078.56/x
  3. Step 3: Cross multiply
    3,404.88x = 4,698.64 × 2,078.56
  4. Step 4: Simplify right side
    3,404.88x = 9,766,405.16
  5. Step 5: Solve for x
    x = 9,766,405.16/3,404.88
  6. Step 6: Final answer
    x = 2,868.36

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1.5x scale

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.