Home / 3,451.20-5,172.96-2,066.40

Finding the Fourth Proportional to 3,451.20, 5,172.96 and 2,066.40

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Solution

The fourth proportional to 3,451.20, 5,172.96 and 2,066.40 is: 3,097.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.20 : 5,172.96 = 2,066.40 : x
  2. Step 2: Convert to fraction form
    3,451.20/5,172.96 = 2,066.40/x
  3. Step 3: Cross multiply
    3,451.20x = 5,172.96 × 2,066.40
  4. Step 4: Simplify right side
    3,451.20x = 10,689,404.54
  5. Step 5: Solve for x
    x = 10,689,404.54/3,451.20
  6. Step 6: Final answer
    x = 3,097.30

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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.