Home / 3,693.61-5,097.18-2,121.76

Finding the Fourth Proportional to 3,693.61, 5,097.18 and 2,121.76

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Solution

The fourth proportional to 3,693.61, 5,097.18 and 2,121.76 is: 2,928.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,693.61 : 5,097.18 = 2,121.76 : x
  2. Step 2: Convert to fraction form
    3,693.61/5,097.18 = 2,121.76/x
  3. Step 3: Cross multiply
    3,693.61x = 5,097.18 × 2,121.76
  4. Step 4: Simplify right side
    3,693.61x = 10,814,992.64
  5. Step 5: Solve for x
    x = 10,814,992.64/3,693.61
  6. Step 6: Final answer
    x = 2,928.03

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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.