Home / 3,693.57-5,097.12-2,121.96

Finding the Fourth Proportional to 3,693.57, 5,097.12 and 2,121.96

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Solution

The fourth proportional to 3,693.57, 5,097.12 and 2,121.96 is: 2,928.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,693.57 : 5,097.12 = 2,121.96 : x
  2. Step 2: Convert to fraction form
    3,693.57/5,097.12 = 2,121.96/x
  3. Step 3: Cross multiply
    3,693.57x = 5,097.12 × 2,121.96
  4. Step 4: Simplify right side
    3,693.57x = 10,815,884.76
  5. Step 5: Solve for x
    x = 10,815,884.76/3,693.57
  6. Step 6: Final answer
    x = 2,928.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.