Home / 3,696.40-5,528.60-3,309.20

Finding the Fourth Proportional to 3,696.40, 5,528.60 and 3,309.20

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Solution

The fourth proportional to 3,696.40, 5,528.60 and 3,309.20 is: 4,949.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,696.40 : 5,528.60 = 3,309.20 : x
  2. Step 2: Convert to fraction form
    3,696.40/5,528.60 = 3,309.20/x
  3. Step 3: Cross multiply
    3,696.40x = 5,528.60 × 3,309.20
  4. Step 4: Simplify right side
    3,696.40x = 18,295,243.12
  5. Step 5: Solve for x
    x = 18,295,243.12/3,696.40
  6. Step 6: Final answer
    x = 4,949.48

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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.