Home / 7,974.80-11,002.20-5,141.60

Finding the Fourth Proportional to 7,974.80, 11,002.20 and 5,141.60

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Solution

The fourth proportional to 7,974.80, 11,002.20 and 5,141.60 is: 7,093.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.80 : 11,002.20 = 5,141.60 : x
  2. Step 2: Convert to fraction form
    7,974.80/11,002.20 = 5,141.60/x
  3. Step 3: Cross multiply
    7,974.80x = 11,002.20 × 5,141.60
  4. Step 4: Simplify right side
    7,974.80x = 56,568,911.52
  5. Step 5: Solve for x
    x = 56,568,911.52/7,974.80
  6. Step 6: Final answer
    x = 7,093.46

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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.