Home / 3,693.66-5,097.90-2,121.72

Finding the Fourth Proportional to 3,693.66, 5,097.90 and 2,121.72

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Solution

The fourth proportional to 3,693.66, 5,097.90 and 2,121.72 is: 2,928.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,693.66 : 5,097.90 = 2,121.72 : x
  2. Step 2: Convert to fraction form
    3,693.66/5,097.90 = 2,121.72/x
  3. Step 3: Cross multiply
    3,693.66x = 5,097.90 × 2,121.72
  4. Step 4: Simplify right side
    3,693.66x = 10,816,316.39
  5. Step 5: Solve for x
    x = 10,816,316.39/3,693.66
  6. Step 6: Final answer
    x = 2,928.35

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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.