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Finding the Fourth Proportional to 2,005.92, 3,009.17 and 619.37

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Solution

The fourth proportional to 2,005.92, 3,009.17 and 619.37 is: 929.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.92 : 3,009.17 = 619.37 : x
  2. Step 2: Convert to fraction form
    2,005.92/3,009.17 = 619.37/x
  3. Step 3: Cross multiply
    2,005.92x = 3,009.17 × 619.37
  4. Step 4: Simplify right side
    2,005.92x = 1,863,771.48
  5. Step 5: Solve for x
    x = 1,863,771.48/2,005.92
  6. Step 6: Final answer
    x = 929.14

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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.