Home / 2,125.04-3,187.10-663.80

Finding the Fourth Proportional to 2,125.04, 3,187.10 and 663.80

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Solution

The fourth proportional to 2,125.04, 3,187.10 and 663.80 is: 995.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.04 : 3,187.10 = 663.80 : x
  2. Step 2: Convert to fraction form
    2,125.04/3,187.10 = 663.80/x
  3. Step 3: Cross multiply
    2,125.04x = 3,187.10 × 663.80
  4. Step 4: Simplify right side
    2,125.04x = 2,115,596.98
  5. Step 5: Solve for x
    x = 2,115,596.98/2,125.04
  6. Step 6: Final answer
    x = 995.56

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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.