Home / 3,421.68-5,135.76-2,192.64

Finding the Fourth Proportional to 3,421.68, 5,135.76 and 2,192.64

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Solution

The fourth proportional to 3,421.68, 5,135.76 and 2,192.64 is: 3,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.68 : 5,135.76 = 2,192.64 : x
  2. Step 2: Convert to fraction form
    3,421.68/5,135.76 = 2,192.64/x
  3. Step 3: Cross multiply
    3,421.68x = 5,135.76 × 2,192.64
  4. Step 4: Simplify right side
    3,421.68x = 11,260,872.81
  5. Step 5: Solve for x
    x = 11,260,872.81/3,421.68
  6. Step 6: Final answer
    x = 3,291.04

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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.