Home / 5,142.62-7,707.21-2,066.78

Finding the Fourth Proportional to 5,142.62, 7,707.21 and 2,066.78

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Solution

The fourth proportional to 5,142.62, 7,707.21 and 2,066.78 is: 3,097.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.62 : 7,707.21 = 2,066.78 : x
  2. Step 2: Convert to fraction form
    5,142.62/7,707.21 = 2,066.78/x
  3. Step 3: Cross multiply
    5,142.62x = 7,707.21 × 2,066.78
  4. Step 4: Simplify right side
    5,142.62x = 15,929,107.48
  5. Step 5: Solve for x
    x = 15,929,107.48/5,142.62
  6. Step 6: Final answer
    x = 3,097.47

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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.