Home / 3,271.90-4,909.60-2,176.78

Finding the Fourth Proportional to 3,271.90, 4,909.60 and 2,176.78

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Solution

The fourth proportional to 3,271.90, 4,909.60 and 2,176.78 is: 3,266.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,271.90 : 4,909.60 = 2,176.78 : x
  2. Step 2: Convert to fraction form
    3,271.90/4,909.60 = 2,176.78/x
  3. Step 3: Cross multiply
    3,271.90x = 4,909.60 × 2,176.78
  4. Step 4: Simplify right side
    3,271.90x = 10,687,119.09
  5. Step 5: Solve for x
    x = 10,687,119.09/3,271.90
  6. Step 6: Final answer
    x = 3,266.33

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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.