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Finding the Fourth Proportional to 6,985.54, 10,468.77 and 3,860.92

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Solution

The fourth proportional to 6,985.54, 10,468.77 and 3,860.92 is: 5,786.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.54 : 10,468.77 = 3,860.92 : x
  2. Step 2: Convert to fraction form
    6,985.54/10,468.77 = 3,860.92/x
  3. Step 3: Cross multiply
    6,985.54x = 10,468.77 × 3,860.92
  4. Step 4: Simplify right side
    6,985.54x = 40,419,083.47
  5. Step 5: Solve for x
    x = 40,419,083.47/6,985.54
  6. Step 6: Final answer
    x = 5,786.11

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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.