Home / 7,974.15-11,008.22-4,991.64

Finding the Fourth Proportional to 7,974.15, 11,008.22 and 4,991.64

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Solution

The fourth proportional to 7,974.15, 11,008.22 and 4,991.64 is: 6,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.15 : 11,008.22 = 4,991.64 : x
  2. Step 2: Convert to fraction form
    7,974.15/11,008.22 = 4,991.64/x
  3. Step 3: Cross multiply
    7,974.15x = 11,008.22 × 4,991.64
  4. Step 4: Simplify right side
    7,974.15x = 54,949,046.32
  5. Step 5: Solve for x
    x = 54,949,046.32/7,974.15
  6. Step 6: Final answer
    x = 6,890.90

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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.