Home / 5,122.11-7,685.04-2,161.30

Finding the Fourth Proportional to 5,122.11, 7,685.04 and 2,161.30

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Solution

The fourth proportional to 5,122.11, 7,685.04 and 2,161.30 is: 3,242.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,122.11 : 7,685.04 = 2,161.30 : x
  2. Step 2: Convert to fraction form
    5,122.11/7,685.04 = 2,161.30/x
  3. Step 3: Cross multiply
    5,122.11x = 7,685.04 × 2,161.30
  4. Step 4: Simplify right side
    5,122.11x = 16,609,676.95
  5. Step 5: Solve for x
    x = 16,609,676.95/5,122.11
  6. Step 6: Final answer
    x = 3,242.74

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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.