Home / 8,480.20-11,699.88-5,121.76

Finding the Fourth Proportional to 8,480.20, 11,699.88 and 5,121.76

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Solution

The fourth proportional to 8,480.20, 11,699.88 and 5,121.76 is: 7,066.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.20 : 11,699.88 = 5,121.76 : x
  2. Step 2: Convert to fraction form
    8,480.20/11,699.88 = 5,121.76/x
  3. Step 3: Cross multiply
    8,480.20x = 11,699.88 × 5,121.76
  4. Step 4: Simplify right side
    8,480.20x = 59,923,977.39
  5. Step 5: Solve for x
    x = 59,923,977.39/8,480.20
  6. Step 6: Final answer
    x = 7,066.34

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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.