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Finding the Fourth Proportional to 2,107.08, 3,158.34 and 873.71

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Solution

The fourth proportional to 2,107.08, 3,158.34 and 873.71 is: 1,309.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.08 : 3,158.34 = 873.71 : x
  2. Step 2: Convert to fraction form
    2,107.08/3,158.34 = 873.71/x
  3. Step 3: Cross multiply
    2,107.08x = 3,158.34 × 873.71
  4. Step 4: Simplify right side
    2,107.08x = 2,759,457.45
  5. Step 5: Solve for x
    x = 2,759,457.45/2,107.08
  6. Step 6: Final answer
    x = 1,309.61

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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.