Home / 5,214.87-7,196.58-2,857.05

Finding the Fourth Proportional to 5,214.87, 7,196.58 and 2,857.05

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Solution

The fourth proportional to 5,214.87, 7,196.58 and 2,857.05 is: 3,942.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.87 : 7,196.58 = 2,857.05 : x
  2. Step 2: Convert to fraction form
    5,214.87/7,196.58 = 2,857.05/x
  3. Step 3: Cross multiply
    5,214.87x = 7,196.58 × 2,857.05
  4. Step 4: Simplify right side
    5,214.87x = 20,560,988.89
  5. Step 5: Solve for x
    x = 20,560,988.89/5,214.87
  6. Step 6: Final answer
    x = 3,942.76

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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.