Home / 7,415.68-11,125.92-2,485.76

Finding the Fourth Proportional to 7,415.68, 11,125.92 and 2,485.76

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Solution

The fourth proportional to 7,415.68, 11,125.92 and 2,485.76 is: 3,729.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.68 : 11,125.92 = 2,485.76 : x
  2. Step 2: Convert to fraction form
    7,415.68/11,125.92 = 2,485.76/x
  3. Step 3: Cross multiply
    7,415.68x = 11,125.92 × 2,485.76
  4. Step 4: Simplify right side
    7,415.68x = 27,656,366.90
  5. Step 5: Solve for x
    x = 27,656,366.90/7,415.68
  6. Step 6: Final answer
    x = 3,729.44

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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.