Home / 2,166.20-3,254.10-2,108.60

Finding the Fourth Proportional to 2,166.20, 3,254.10 and 2,108.60

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Solution

The fourth proportional to 2,166.20, 3,254.10 and 2,108.60 is: 3,167.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.20 : 3,254.10 = 2,108.60 : x
  2. Step 2: Convert to fraction form
    2,166.20/3,254.10 = 2,108.60/x
  3. Step 3: Cross multiply
    2,166.20x = 3,254.10 × 2,108.60
  4. Step 4: Simplify right side
    2,166.20x = 6,861,595.26
  5. Step 5: Solve for x
    x = 6,861,595.26/2,166.20
  6. Step 6: Final answer
    x = 3,167.57

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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.