Home / 7,218.80-10,821.72-3,758.48

Finding the Fourth Proportional to 7,218.80, 10,821.72 and 3,758.48

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Solution

The fourth proportional to 7,218.80, 10,821.72 and 3,758.48 is: 5,634.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.80 : 10,821.72 = 3,758.48 : x
  2. Step 2: Convert to fraction form
    7,218.80/10,821.72 = 3,758.48/x
  3. Step 3: Cross multiply
    7,218.80x = 10,821.72 × 3,758.48
  4. Step 4: Simplify right side
    7,218.80x = 40,673,218.19
  5. Step 5: Solve for x
    x = 40,673,218.19/7,218.80
  6. Step 6: Final answer
    x = 5,634.35

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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.