Home / 5,089.31-7,631.90-2,125.80

Finding the Fourth Proportional to 5,089.31, 7,631.90 and 2,125.80

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Solution

The fourth proportional to 5,089.31, 7,631.90 and 2,125.80 is: 3,187.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089.31 : 7,631.90 = 2,125.80 : x
  2. Step 2: Convert to fraction form
    5,089.31/7,631.90 = 2,125.80/x
  3. Step 3: Cross multiply
    5,089.31x = 7,631.90 × 2,125.80
  4. Step 4: Simplify right side
    5,089.31x = 16,223,890.36
  5. Step 5: Solve for x
    x = 16,223,890.36/5,089.31
  6. Step 6: Final answer
    x = 3,187.84

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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.