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Finding the Fourth Proportional to 2,005.92, 3,006.77 and 689.27

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Solution

The fourth proportional to 2,005.92, 3,006.77 and 689.27 is: 1,033.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.92 : 3,006.77 = 689.27 : x
  2. Step 2: Convert to fraction form
    2,005.92/3,006.77 = 689.27/x
  3. Step 3: Cross multiply
    2,005.92x = 3,006.77 × 689.27
  4. Step 4: Simplify right side
    2,005.92x = 2,072,457.88
  5. Step 5: Solve for x
    x = 2,072,457.88/2,005.92
  6. Step 6: Final answer
    x = 1,033.17

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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.