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Finding the Fourth Proportional to 5,871.81, 8,811.15 and 2,176.65

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Solution

The fourth proportional to 5,871.81, 8,811.15 and 2,176.65 is: 3,266.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,871.81 : 8,811.15 = 2,176.65 : x
  2. Step 2: Convert to fraction form
    5,871.81/8,811.15 = 2,176.65/x
  3. Step 3: Cross multiply
    5,871.81x = 8,811.15 × 2,176.65
  4. Step 4: Simplify right side
    5,871.81x = 19,178,789.65
  5. Step 5: Solve for x
    x = 19,178,789.65/5,871.81
  6. Step 6: Final answer
    x = 3,266.25

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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.