Home / 3,415.66-5,120.07-1,332.80

Finding the Fourth Proportional to 3,415.66, 5,120.07 and 1,332.80

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Solution

The fourth proportional to 3,415.66, 5,120.07 and 1,332.80 is: 1,997.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.66 : 5,120.07 = 1,332.80 : x
  2. Step 2: Convert to fraction form
    3,415.66/5,120.07 = 1,332.80/x
  3. Step 3: Cross multiply
    3,415.66x = 5,120.07 × 1,332.80
  4. Step 4: Simplify right side
    3,415.66x = 6,823,997.03
  5. Step 5: Solve for x
    x = 6,823,997.03/3,415.66
  6. Step 6: Final answer
    x = 1,997.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.