Home / 7,421.80-11,135.70-3,259.62

Finding the Fourth Proportional to 7,421.80, 11,135.70 and 3,259.62

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Solution

The fourth proportional to 7,421.80, 11,135.70 and 3,259.62 is: 4,890.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.80 : 11,135.70 = 3,259.62 : x
  2. Step 2: Convert to fraction form
    7,421.80/11,135.70 = 3,259.62/x
  3. Step 3: Cross multiply
    7,421.80x = 11,135.70 × 3,259.62
  4. Step 4: Simplify right side
    7,421.80x = 36,298,150.43
  5. Step 5: Solve for x
    x = 36,298,150.43/7,421.80
  6. Step 6: Final answer
    x = 4,890.75

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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.