Home / 3,615.60-5,420.20-3,226.80

Finding the Fourth Proportional to 3,615.60, 5,420.20 and 3,226.80

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Solution

The fourth proportional to 3,615.60, 5,420.20 and 3,226.80 is: 4,837.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.60 : 5,420.20 = 3,226.80 : x
  2. Step 2: Convert to fraction form
    3,615.60/5,420.20 = 3,226.80/x
  3. Step 3: Cross multiply
    3,615.60x = 5,420.20 × 3,226.80
  4. Step 4: Simplify right side
    3,615.60x = 17,489,901.36
  5. Step 5: Solve for x
    x = 17,489,901.36/3,615.60
  6. Step 6: Final answer
    x = 4,837.34

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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.