Home / 7,019.11-10,523.80-3,121.39

Finding the Fourth Proportional to 7,019.11, 10,523.80 and 3,121.39

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Solution

The fourth proportional to 7,019.11, 10,523.80 and 3,121.39 is: 4,679.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.11 : 10,523.80 = 3,121.39 : x
  2. Step 2: Convert to fraction form
    7,019.11/10,523.80 = 3,121.39/x
  3. Step 3: Cross multiply
    7,019.11x = 10,523.80 × 3,121.39
  4. Step 4: Simplify right side
    7,019.11x = 32,848,884.08
  5. Step 5: Solve for x
    x = 32,848,884.08/7,019.11
  6. Step 6: Final answer
    x = 4,679.92

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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.