Home / 5,172.13-7,137.61-3,876.31

Finding the Fourth Proportional to 5,172.13, 7,137.61 and 3,876.31

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Solution

The fourth proportional to 5,172.13, 7,137.61 and 3,876.31 is: 5,349.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.13 : 7,137.61 = 3,876.31 : x
  2. Step 2: Convert to fraction form
    5,172.13/7,137.61 = 3,876.31/x
  3. Step 3: Cross multiply
    5,172.13x = 7,137.61 × 3,876.31
  4. Step 4: Simplify right side
    5,172.13x = 27,667,589.02
  5. Step 5: Solve for x
    x = 27,667,589.02/5,172.13
  6. Step 6: Final answer
    x = 5,349.36

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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.