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Finding the Fourth Proportional to 3,790.92, 5,678.82 and 1,837.20

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Solution

The fourth proportional to 3,790.92, 5,678.82 and 1,837.20 is: 2,752.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.92 : 5,678.82 = 1,837.20 : x
  2. Step 2: Convert to fraction form
    3,790.92/5,678.82 = 1,837.20/x
  3. Step 3: Cross multiply
    3,790.92x = 5,678.82 × 1,837.20
  4. Step 4: Simplify right side
    3,790.92x = 10,433,128.10
  5. Step 5: Solve for x
    x = 10,433,128.10/3,790.92
  6. Step 6: Final answer
    x = 2,752.14

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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.