Home / 7,972.90-11,004.13-5,279.37

Finding the Fourth Proportional to 7,972.90, 11,004.13 and 5,279.37

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Solution

The fourth proportional to 7,972.90, 11,004.13 and 5,279.37 is: 7,286.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.90 : 11,004.13 = 5,279.37 : x
  2. Step 2: Convert to fraction form
    7,972.90/11,004.13 = 5,279.37/x
  3. Step 3: Cross multiply
    7,972.90x = 11,004.13 × 5,279.37
  4. Step 4: Simplify right side
    7,972.90x = 58,094,847.40
  5. Step 5: Solve for x
    x = 58,094,847.40/7,972.90
  6. Step 6: Final answer
    x = 7,286.54

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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.