Home / 7,974.16-11,961.12-2,427.28

Finding the Fourth Proportional to 7,974.16, 11,961.12 and 2,427.28

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Solution

The fourth proportional to 7,974.16, 11,961.12 and 2,427.28 is: 3,640.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.16 : 11,961.12 = 2,427.28 : x
  2. Step 2: Convert to fraction form
    7,974.16/11,961.12 = 2,427.28/x
  3. Step 3: Cross multiply
    7,974.16x = 11,961.12 × 2,427.28
  4. Step 4: Simplify right side
    7,974.16x = 29,032,987.35
  5. Step 5: Solve for x
    x = 29,032,987.35/7,974.16
  6. Step 6: Final answer
    x = 3,640.88

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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.