Home / 5,089.30-7,631.91-2,125.80

Finding the Fourth Proportional to 5,089.30, 7,631.91 and 2,125.80

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Solution

The fourth proportional to 5,089.30, 7,631.91 and 2,125.80 is: 3,187.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089.30 : 7,631.91 = 2,125.80 : x
  2. Step 2: Convert to fraction form
    5,089.30/7,631.91 = 2,125.80/x
  3. Step 3: Cross multiply
    5,089.30x = 7,631.91 × 2,125.80
  4. Step 4: Simplify right side
    5,089.30x = 16,223,914.28
  5. Step 5: Solve for x
    x = 16,223,914.28/5,089.30
  6. Step 6: Final answer
    x = 3,187.85

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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.