Home / 7,142.96-10,712.71-2,757.62

Finding the Fourth Proportional to 7,142.96, 10,712.71 and 2,757.62

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Solution

The fourth proportional to 7,142.96, 10,712.71 and 2,757.62 is: 4,135.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.96 : 10,712.71 = 2,757.62 : x
  2. Step 2: Convert to fraction form
    7,142.96/10,712.71 = 2,757.62/x
  3. Step 3: Cross multiply
    7,142.96x = 10,712.71 × 2,757.62
  4. Step 4: Simplify right side
    7,142.96x = 29,541,583.35
  5. Step 5: Solve for x
    x = 29,541,583.35/7,142.96
  6. Step 6: Final answer
    x = 4,135.76

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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.