Home / 5,120.22-7,065.81-2,882.28

Finding the Fourth Proportional to 5,120.22, 7,065.81 and 2,882.28

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Solution

The fourth proportional to 5,120.22, 7,065.81 and 2,882.28 is: 3,977.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.22 : 7,065.81 = 2,882.28 : x
  2. Step 2: Convert to fraction form
    5,120.22/7,065.81 = 2,882.28/x
  3. Step 3: Cross multiply
    5,120.22x = 7,065.81 × 2,882.28
  4. Step 4: Simplify right side
    5,120.22x = 20,365,642.85
  5. Step 5: Solve for x
    x = 20,365,642.85/5,120.22
  6. Step 6: Final answer
    x = 3,977.49

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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.