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Finding the Fourth Proportional to 2,667.71, 4,001.73 and 818.83

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Solution

The fourth proportional to 2,667.71, 4,001.73 and 818.83 is: 1,228.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,667.71 : 4,001.73 = 818.83 : x
  2. Step 2: Convert to fraction form
    2,667.71/4,001.73 = 818.83/x
  3. Step 3: Cross multiply
    2,667.71x = 4,001.73 × 818.83
  4. Step 4: Simplify right side
    2,667.71x = 3,276,744.65
  5. Step 5: Solve for x
    x = 3,276,744.65/2,667.71
  6. Step 6: Final answer
    x = 1,228.30

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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.