Home / 7,328.20-10,979.70-3,424.60

Finding the Fourth Proportional to 7,328.20, 10,979.70 and 3,424.60

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Solution

The fourth proportional to 7,328.20, 10,979.70 and 3,424.60 is: 5,131.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,328.20 : 10,979.70 = 3,424.60 : x
  2. Step 2: Convert to fraction form
    7,328.20/10,979.70 = 3,424.60/x
  3. Step 3: Cross multiply
    7,328.20x = 10,979.70 × 3,424.60
  4. Step 4: Simplify right side
    7,328.20x = 37,601,080.62
  5. Step 5: Solve for x
    x = 37,601,080.62/7,328.20
  6. Step 6: Final answer
    x = 5,131.01

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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.