Home / 7,824.20-11,670.37-7,279.88

Finding the Fourth Proportional to 7,824.20, 11,670.37 and 7,279.88

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Solution

The fourth proportional to 7,824.20, 11,670.37 and 7,279.88 is: 10,858.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,824.20 : 11,670.37 = 7,279.88 : x
  2. Step 2: Convert to fraction form
    7,824.20/11,670.37 = 7,279.88/x
  3. Step 3: Cross multiply
    7,824.20x = 11,670.37 × 7,279.88
  4. Step 4: Simplify right side
    7,824.20x = 84,958,893.16
  5. Step 5: Solve for x
    x = 84,958,893.16/7,824.20
  6. Step 6: Final answer
    x = 10,858.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.