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Finding the Fourth Proportional to 11,785.77, 17,679.08 and 3,888.48

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Solution

The fourth proportional to 11,785.77, 17,679.08 and 3,888.48 is: 5,832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,785.77 : 17,679.08 = 3,888.48 : x
  2. Step 2: Convert to fraction form
    11,785.77/17,679.08 = 3,888.48/x
  3. Step 3: Cross multiply
    11,785.77x = 17,679.08 × 3,888.48
  4. Step 4: Simplify right side
    11,785.77x = 68,744,749.00
  5. Step 5: Solve for x
    x = 68,744,749.00/11,785.77
  6. Step 6: Final answer
    x = 5,832.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.