Home / 5,396.78-8,089.70-2,621.11

Finding the Fourth Proportional to 5,396.78, 8,089.70 and 2,621.11

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Solution

The fourth proportional to 5,396.78, 8,089.70 and 2,621.11 is: 3,929.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,396.78 : 8,089.70 = 2,621.11 : x
  2. Step 2: Convert to fraction form
    5,396.78/8,089.70 = 2,621.11/x
  3. Step 3: Cross multiply
    5,396.78x = 8,089.70 × 2,621.11
  4. Step 4: Simplify right side
    5,396.78x = 21,203,982.78
  5. Step 5: Solve for x
    x = 21,203,982.78/5,396.78
  6. Step 6: Final answer
    x = 3,929.01

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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.