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Finding the Fourth Proportional to 3,760, 5,189.12 and 2,104.32

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Solution

The fourth proportional to 3,760, 5,189.12 and 2,104.32 is: 2,904.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760 : 5,189.12 = 2,104.32 : x
  2. Step 2: Convert to fraction form
    3,760/5,189.12 = 2,104.32/x
  3. Step 3: Cross multiply
    3,760x = 5,189.12 × 2,104.32
  4. Step 4: Simplify right side
    3,760x = 10,919,569.00
  5. Step 5: Solve for x
    x = 10,919,569.00/3,760
  6. Step 6: Final answer
    x = 2,904.14

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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.