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Finding the Fourth Proportional to 9,767.70, 13,481.15 and 5,790.20

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Solution

The fourth proportional to 9,767.70, 13,481.15 and 5,790.20 is: 7,991.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,767.70 : 13,481.15 = 5,790.20 : x
  2. Step 2: Convert to fraction form
    9,767.70/13,481.15 = 5,790.20/x
  3. Step 3: Cross multiply
    9,767.70x = 13,481.15 × 5,790.20
  4. Step 4: Simplify right side
    9,767.70x = 78,058,458.37
  5. Step 5: Solve for x
    x = 78,058,458.37/9,767.70
  6. Step 6: Final answer
    x = 7,991.49

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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.