Home / 3,420.24-5,132.60-2,122.60

Finding the Fourth Proportional to 3,420.24, 5,132.60 and 2,122.60

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Solution

The fourth proportional to 3,420.24, 5,132.60 and 2,122.60 is: 3,185.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.24 : 5,132.60 = 2,122.60 : x
  2. Step 2: Convert to fraction form
    3,420.24/5,132.60 = 2,122.60/x
  3. Step 3: Cross multiply
    3,420.24x = 5,132.60 × 2,122.60
  4. Step 4: Simplify right side
    3,420.24x = 10,894,456.76
  5. Step 5: Solve for x
    x = 10,894,456.76/3,420.24
  6. Step 6: Final answer
    x = 3,185.29

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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.