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Finding the Fourth Proportional to 2,866.35, 3,950.20 and 2,235.88

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Solution

The fourth proportional to 2,866.35, 3,950.20 and 2,235.88 is: 3,081.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.35 : 3,950.20 = 2,235.88 : x
  2. Step 2: Convert to fraction form
    2,866.35/3,950.20 = 2,235.88/x
  3. Step 3: Cross multiply
    2,866.35x = 3,950.20 × 2,235.88
  4. Step 4: Simplify right side
    2,866.35x = 8,832,170.61
  5. Step 5: Solve for x
    x = 8,832,170.61/2,866.35
  6. Step 6: Final answer
    x = 3,081.33

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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.