Home / 5,161.68-7,123.23-3,171.09

Finding the Fourth Proportional to 5,161.68, 7,123.23 and 3,171.09

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Solution

The fourth proportional to 5,161.68, 7,123.23 and 3,171.09 is: 4,376.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.68 : 7,123.23 = 3,171.09 : x
  2. Step 2: Convert to fraction form
    5,161.68/7,123.23 = 3,171.09/x
  3. Step 3: Cross multiply
    5,161.68x = 7,123.23 × 3,171.09
  4. Step 4: Simplify right side
    5,161.68x = 22,588,403.42
  5. Step 5: Solve for x
    x = 22,588,403.42/5,161.68
  6. Step 6: Final answer
    x = 4,376.17

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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.