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Finding the Fourth Proportional to 3,404.39, 4,698.17 and 1,912.57

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Solution

The fourth proportional to 3,404.39, 4,698.17 and 1,912.57 is: 2,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.39 : 4,698.17 = 1,912.57 : x
  2. Step 2: Convert to fraction form
    3,404.39/4,698.17 = 1,912.57/x
  3. Step 3: Cross multiply
    3,404.39x = 4,698.17 × 1,912.57
  4. Step 4: Simplify right side
    3,404.39x = 8,985,545.94
  5. Step 5: Solve for x
    x = 8,985,545.94/3,404.39
  6. Step 6: Final answer
    x = 2,639.40

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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.