Home / 7,409.40-11,121.30-4,493.40

Finding the Fourth Proportional to 7,409.40, 11,121.30 and 4,493.40

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Solution

The fourth proportional to 7,409.40, 11,121.30 and 4,493.40 is: 6,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,409.40 : 11,121.30 = 4,493.40 : x
  2. Step 2: Convert to fraction form
    7,409.40/11,121.30 = 4,493.40/x
  3. Step 3: Cross multiply
    7,409.40x = 11,121.30 × 4,493.40
  4. Step 4: Simplify right side
    7,409.40x = 49,972,449.42
  5. Step 5: Solve for x
    x = 49,972,449.42/7,409.40
  6. Step 6: Final answer
    x = 6,744.47

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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.