Home / 7,418.86-11,129.80-3,036.68

Finding the Fourth Proportional to 7,418.86, 11,129.80 and 3,036.68

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Solution

The fourth proportional to 7,418.86, 11,129.80 and 3,036.68 is: 4,555.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.86 : 11,129.80 = 3,036.68 : x
  2. Step 2: Convert to fraction form
    7,418.86/11,129.80 = 3,036.68/x
  3. Step 3: Cross multiply
    7,418.86x = 11,129.80 × 3,036.68
  4. Step 4: Simplify right side
    7,418.86x = 33,797,641.06
  5. Step 5: Solve for x
    x = 33,797,641.06/7,418.86
  6. Step 6: Final answer
    x = 4,555.64

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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.