Home / 5,161.76-7,122.43-2,892.75

Finding the Fourth Proportional to 5,161.76, 7,122.43 and 2,892.75

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Solution

The fourth proportional to 5,161.76, 7,122.43 and 2,892.75 is: 3,991.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.76 : 7,122.43 = 2,892.75 : x
  2. Step 2: Convert to fraction form
    5,161.76/7,122.43 = 2,892.75/x
  3. Step 3: Cross multiply
    5,161.76x = 7,122.43 × 2,892.75
  4. Step 4: Simplify right side
    5,161.76x = 20,603,386.29
  5. Step 5: Solve for x
    x = 20,603,386.29/5,161.76
  6. Step 6: Final answer
    x = 3,991.54

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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.