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Finding the Fourth Proportional to 3,404.84, 4,698.54 and 1,912.82

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Solution

The fourth proportional to 3,404.84, 4,698.54 and 1,912.82 is: 2,639.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.84 : 4,698.54 = 1,912.82 : x
  2. Step 2: Convert to fraction form
    3,404.84/4,698.54 = 1,912.82/x
  3. Step 3: Cross multiply
    3,404.84x = 4,698.54 × 1,912.82
  4. Step 4: Simplify right side
    3,404.84x = 8,987,437.79
  5. Step 5: Solve for x
    x = 8,987,437.79/3,404.84
  6. Step 6: Final answer
    x = 2,639.61

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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.