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Finding the Fourth Proportional to 5,324.90, 7,977.62 and 3,860.42

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Solution

The fourth proportional to 5,324.90, 7,977.62 and 3,860.42 is: 5,783.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,324.90 : 7,977.62 = 3,860.42 : x
  2. Step 2: Convert to fraction form
    5,324.90/7,977.62 = 3,860.42/x
  3. Step 3: Cross multiply
    5,324.90x = 7,977.62 × 3,860.42
  4. Step 4: Simplify right side
    5,324.90x = 30,796,963.80
  5. Step 5: Solve for x
    x = 30,796,963.80/5,324.90
  6. Step 6: Final answer
    x = 5,783.58

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1.5x scale

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.