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Finding the Fourth Proportional to 3,440.54, 4,747.92 and 1,868.62

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Solution

The fourth proportional to 3,440.54, 4,747.92 and 1,868.62 is: 2,578.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.54 : 4,747.92 = 1,868.62 : x
  2. Step 2: Convert to fraction form
    3,440.54/4,747.92 = 1,868.62/x
  3. Step 3: Cross multiply
    3,440.54x = 4,747.92 × 1,868.62
  4. Step 4: Simplify right side
    3,440.54x = 8,872,029.86
  5. Step 5: Solve for x
    x = 8,872,029.86/3,440.54
  6. Step 6: Final answer
    x = 2,578.68

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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.