Home / 5,215.11-7,196.81-2,825.05

Finding the Fourth Proportional to 5,215.11, 7,196.81 and 2,825.05

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Solution

The fourth proportional to 5,215.11, 7,196.81 and 2,825.05 is: 3,898.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.11 : 7,196.81 = 2,825.05 : x
  2. Step 2: Convert to fraction form
    5,215.11/7,196.81 = 2,825.05/x
  3. Step 3: Cross multiply
    5,215.11x = 7,196.81 × 2,825.05
  4. Step 4: Simplify right side
    5,215.11x = 20,331,348.09
  5. Step 5: Solve for x
    x = 20,331,348.09/5,215.11
  6. Step 6: Final answer
    x = 3,898.55

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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.