Home / 7,980.48-11,972.74-3,049.60

Finding the Fourth Proportional to 7,980.48, 11,972.74 and 3,049.60

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Solution

The fourth proportional to 7,980.48, 11,972.74 and 3,049.60 is: 4,575.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.48 : 11,972.74 = 3,049.60 : x
  2. Step 2: Convert to fraction form
    7,980.48/11,972.74 = 3,049.60/x
  3. Step 3: Cross multiply
    7,980.48x = 11,972.74 × 3,049.60
  4. Step 4: Simplify right side
    7,980.48x = 36,512,067.90
  5. Step 5: Solve for x
    x = 36,512,067.90/7,980.48
  6. Step 6: Final answer
    x = 4,575.17

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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.