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Finding the Fourth Proportional to 3,166.65, 4,727.77 and 2,855.61

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Solution

The fourth proportional to 3,166.65, 4,727.77 and 2,855.61 is: 4,263.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,166.65 : 4,727.77 = 2,855.61 : x
  2. Step 2: Convert to fraction form
    3,166.65/4,727.77 = 2,855.61/x
  3. Step 3: Cross multiply
    3,166.65x = 4,727.77 × 2,855.61
  4. Step 4: Simplify right side
    3,166.65x = 13,500,667.29
  5. Step 5: Solve for x
    x = 13,500,667.29/3,166.65
  6. Step 6: Final answer
    x = 4,263.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.