Home / 7,420.24-11,127.12-2,800

Finding the Fourth Proportional to 7,420.24, 11,127.12 and 2,800

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Solution

The fourth proportional to 7,420.24, 11,127.12 and 2,800 is: 4,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.24 : 11,127.12 = 2,800 : x
  2. Step 2: Convert to fraction form
    7,420.24/11,127.12 = 2,800/x
  3. Step 3: Cross multiply
    7,420.24x = 11,127.12 × 2,800
  4. Step 4: Simplify right side
    7,420.24x = 31,155,936.00
  5. Step 5: Solve for x
    x = 31,155,936.00/7,420.24
  6. Step 6: Final answer
    x = 4,198.78

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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.