Home / 7,142.49-10,715.33-3,447.82

Finding the Fourth Proportional to 7,142.49, 10,715.33 and 3,447.82

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Solution

The fourth proportional to 7,142.49, 10,715.33 and 3,447.82 is: 5,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.49 : 10,715.33 = 3,447.82 : x
  2. Step 2: Convert to fraction form
    7,142.49/10,715.33 = 3,447.82/x
  3. Step 3: Cross multiply
    7,142.49x = 10,715.33 × 3,447.82
  4. Step 4: Simplify right side
    7,142.49x = 36,944,529.08
  5. Step 5: Solve for x
    x = 36,944,529.08/7,142.49
  6. Step 6: Final answer
    x = 5,172.50

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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.