Home / 5,089.68-7,631.34-2,871.70

Finding the Fourth Proportional to 5,089.68, 7,631.34 and 2,871.70

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Solution

The fourth proportional to 5,089.68, 7,631.34 and 2,871.70 is: 4,305.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089.68 : 7,631.34 = 2,871.70 : x
  2. Step 2: Convert to fraction form
    5,089.68/7,631.34 = 2,871.70/x
  3. Step 3: Cross multiply
    5,089.68x = 7,631.34 × 2,871.70
  4. Step 4: Simplify right side
    5,089.68x = 21,914,919.08
  5. Step 5: Solve for x
    x = 21,914,919.08/5,089.68
  6. Step 6: Final answer
    x = 4,305.76

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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.