Home / 8,112.48-11,197.44-5,279.76

Finding the Fourth Proportional to 8,112.48, 11,197.44 and 5,279.76

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Solution

The fourth proportional to 8,112.48, 11,197.44 and 5,279.76 is: 7,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,112.48 : 11,197.44 = 5,279.76 : x
  2. Step 2: Convert to fraction form
    8,112.48/11,197.44 = 5,279.76/x
  3. Step 3: Cross multiply
    8,112.48x = 11,197.44 × 5,279.76
  4. Step 4: Simplify right side
    8,112.48x = 59,119,795.81
  5. Step 5: Solve for x
    x = 59,119,795.81/8,112.48
  6. Step 6: Final answer
    x = 7,287.51

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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.