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Finding the Fourth Proportional to 2,838.97, 4,257.78 and 890.92

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Solution

The fourth proportional to 2,838.97, 4,257.78 and 890.92 is: 1,336.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.97 : 4,257.78 = 890.92 : x
  2. Step 2: Convert to fraction form
    2,838.97/4,257.78 = 890.92/x
  3. Step 3: Cross multiply
    2,838.97x = 4,257.78 × 890.92
  4. Step 4: Simplify right side
    2,838.97x = 3,793,341.36
  5. Step 5: Solve for x
    x = 3,793,341.36/2,838.97
  6. Step 6: Final answer
    x = 1,336.17

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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.