Home / 7,218.72-10,824.84-3,321

Finding the Fourth Proportional to 7,218.72, 10,824.84 and 3,321

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Solution

The fourth proportional to 7,218.72, 10,824.84 and 3,321 is: 4,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.72 : 10,824.84 = 3,321 : x
  2. Step 2: Convert to fraction form
    7,218.72/10,824.84 = 3,321/x
  3. Step 3: Cross multiply
    7,218.72x = 10,824.84 × 3,321
  4. Step 4: Simplify right side
    7,218.72x = 35,949,293.64
  5. Step 5: Solve for x
    x = 35,949,293.64/7,218.72
  6. Step 6: Final answer
    x = 4,980.01

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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.