Home / 3,428.10-5,145.05-2,650.20

Finding the Fourth Proportional to 3,428.10, 5,145.05 and 2,650.20

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Solution

The fourth proportional to 3,428.10, 5,145.05 and 2,650.20 is: 3,977.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.10 : 5,145.05 = 2,650.20 : x
  2. Step 2: Convert to fraction form
    3,428.10/5,145.05 = 2,650.20/x
  3. Step 3: Cross multiply
    3,428.10x = 5,145.05 × 2,650.20
  4. Step 4: Simplify right side
    3,428.10x = 13,635,398.26
  5. Step 5: Solve for x
    x = 13,635,398.26/3,428.10
  6. Step 6: Final answer
    x = 3,977.54

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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.