Home / 3,431.99-5,158.92-2,141.66

Finding the Fourth Proportional to 3,431.99, 5,158.92 and 2,141.66

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Solution

The fourth proportional to 3,431.99, 5,158.92 and 2,141.66 is: 3,219.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.99 : 5,158.92 = 2,141.66 : x
  2. Step 2: Convert to fraction form
    3,431.99/5,158.92 = 2,141.66/x
  3. Step 3: Cross multiply
    3,431.99x = 5,158.92 × 2,141.66
  4. Step 4: Simplify right side
    3,431.99x = 11,048,626.81
  5. Step 5: Solve for x
    x = 11,048,626.81/3,431.99
  6. Step 6: Final answer
    x = 3,219.31

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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.