Home / 5,160.88-7,121.39-2,892.34

Finding the Fourth Proportional to 5,160.88, 7,121.39 and 2,892.34

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Solution

The fourth proportional to 5,160.88, 7,121.39 and 2,892.34 is: 3,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.88 : 7,121.39 = 2,892.34 : x
  2. Step 2: Convert to fraction form
    5,160.88/7,121.39 = 2,892.34/x
  3. Step 3: Cross multiply
    5,160.88x = 7,121.39 × 2,892.34
  4. Step 4: Simplify right side
    5,160.88x = 20,597,475.59
  5. Step 5: Solve for x
    x = 20,597,475.59/5,160.88
  6. Step 6: Final answer
    x = 3,991.08

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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.