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Finding the Fourth Proportional to 11,804.78, 17,707.16 and 3,905.17

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Solution

The fourth proportional to 11,804.78, 17,707.16 and 3,905.17 is: 5,857.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,804.78 : 17,707.16 = 3,905.17 : x
  2. Step 2: Convert to fraction form
    11,804.78/17,707.16 = 3,905.17/x
  3. Step 3: Cross multiply
    11,804.78x = 17,707.16 × 3,905.17
  4. Step 4: Simplify right side
    11,804.78x = 69,149,470.02
  5. Step 5: Solve for x
    x = 69,149,470.02/11,804.78
  6. Step 6: Final answer
    x = 5,857.75

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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.