Home / 2,120.28-3,178.14-2,097.24

Finding the Fourth Proportional to 2,120.28, 3,178.14 and 2,097.24

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Solution

The fourth proportional to 2,120.28, 3,178.14 and 2,097.24 is: 3,143.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.28 : 3,178.14 = 2,097.24 : x
  2. Step 2: Convert to fraction form
    2,120.28/3,178.14 = 2,097.24/x
  3. Step 3: Cross multiply
    2,120.28x = 3,178.14 × 2,097.24
  4. Step 4: Simplify right side
    2,120.28x = 6,665,322.33
  5. Step 5: Solve for x
    x = 6,665,322.33/2,120.28
  6. Step 6: Final answer
    x = 3,143.60

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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.