Home / 7,981.92-11,003.72-5,743.08

Finding the Fourth Proportional to 7,981.92, 11,003.72 and 5,743.08

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Solution

The fourth proportional to 7,981.92, 11,003.72 and 5,743.08 is: 7,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.92 : 11,003.72 = 5,743.08 : x
  2. Step 2: Convert to fraction form
    7,981.92/11,003.72 = 5,743.08/x
  3. Step 3: Cross multiply
    7,981.92x = 11,003.72 × 5,743.08
  4. Step 4: Simplify right side
    7,981.92x = 63,195,215.54
  5. Step 5: Solve for x
    x = 63,195,215.54/7,981.92
  6. Step 6: Final answer
    x = 7,917.30

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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.