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Finding the Fourth Proportional to 2,005.96, 3,006.86 and 706.76

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Solution

The fourth proportional to 2,005.96, 3,006.86 and 706.76 is: 1,059.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.96 : 3,006.86 = 706.76 : x
  2. Step 2: Convert to fraction form
    2,005.96/3,006.86 = 706.76/x
  3. Step 3: Cross multiply
    2,005.96x = 3,006.86 × 706.76
  4. Step 4: Simplify right side
    2,005.96x = 2,125,128.37
  5. Step 5: Solve for x
    x = 2,125,128.37/2,005.96
  6. Step 6: Final answer
    x = 1,059.41

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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.