Home / 7,187.61-10,783.03-2,190.43

Finding the Fourth Proportional to 7,187.61, 10,783.03 and 2,190.43

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Solution

The fourth proportional to 7,187.61, 10,783.03 and 2,190.43 is: 3,286.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187.61 : 10,783.03 = 2,190.43 : x
  2. Step 2: Convert to fraction form
    7,187.61/10,783.03 = 2,190.43/x
  3. Step 3: Cross multiply
    7,187.61x = 10,783.03 × 2,190.43
  4. Step 4: Simplify right side
    7,187.61x = 23,619,472.40
  5. Step 5: Solve for x
    x = 23,619,472.40/7,187.61
  6. Step 6: Final answer
    x = 3,286.14

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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.