Home / 7,367.78-11,054.40-3,420.99

Finding the Fourth Proportional to 7,367.78, 11,054.40 and 3,420.99

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Solution

The fourth proportional to 7,367.78, 11,054.40 and 3,420.99 is: 5,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,367.78 : 11,054.40 = 3,420.99 : x
  2. Step 2: Convert to fraction form
    7,367.78/11,054.40 = 3,420.99/x
  3. Step 3: Cross multiply
    7,367.78x = 11,054.40 × 3,420.99
  4. Step 4: Simplify right side
    7,367.78x = 37,816,991.86
  5. Step 5: Solve for x
    x = 37,816,991.86/7,367.78
  6. Step 6: Final answer
    x = 5,132.76

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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.