Home / 7,131.38-10,703.68-3,623.87

Finding the Fourth Proportional to 7,131.38, 10,703.68 and 3,623.87

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Solution

The fourth proportional to 7,131.38, 10,703.68 and 3,623.87 is: 5,439.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.38 : 10,703.68 = 3,623.87 : x
  2. Step 2: Convert to fraction form
    7,131.38/10,703.68 = 3,623.87/x
  3. Step 3: Cross multiply
    7,131.38x = 10,703.68 × 3,623.87
  4. Step 4: Simplify right side
    7,131.38x = 38,788,762.54
  5. Step 5: Solve for x
    x = 38,788,762.54/7,131.38
  6. Step 6: Final answer
    x = 5,439.17

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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.