Home / 5,120.77-7,066.44-2,882.74

Finding the Fourth Proportional to 5,120.77, 7,066.44 and 2,882.74

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Solution

The fourth proportional to 5,120.77, 7,066.44 and 2,882.74 is: 3,978.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.77 : 7,066.44 = 2,882.74 : x
  2. Step 2: Convert to fraction form
    5,120.77/7,066.44 = 2,882.74/x
  3. Step 3: Cross multiply
    5,120.77x = 7,066.44 × 2,882.74
  4. Step 4: Simplify right side
    5,120.77x = 20,370,704.83
  5. Step 5: Solve for x
    x = 20,370,704.83/5,120.77
  6. Step 6: Final answer
    x = 3,978.06

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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.