Home / 7,086.10-10,629.55-2,155.90

Finding the Fourth Proportional to 7,086.10, 10,629.55 and 2,155.90

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Solution

The fourth proportional to 7,086.10, 10,629.55 and 2,155.90 is: 3,233.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,086.10 : 10,629.55 = 2,155.90 : x
  2. Step 2: Convert to fraction form
    7,086.10/10,629.55 = 2,155.90/x
  3. Step 3: Cross multiply
    7,086.10x = 10,629.55 × 2,155.90
  4. Step 4: Simplify right side
    7,086.10x = 22,916,246.85
  5. Step 5: Solve for x
    x = 22,916,246.85/7,086.10
  6. Step 6: Final answer
    x = 3,233.97

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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.