Home / 4,969.21-7,456.40-2,197.80

Finding the Fourth Proportional to 4,969.21, 7,456.40 and 2,197.80

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Solution

The fourth proportional to 4,969.21, 7,456.40 and 2,197.80 is: 3,297.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969.21 : 7,456.40 = 2,197.80 : x
  2. Step 2: Convert to fraction form
    4,969.21/7,456.40 = 2,197.80/x
  3. Step 3: Cross multiply
    4,969.21x = 7,456.40 × 2,197.80
  4. Step 4: Simplify right side
    4,969.21x = 16,387,675.92
  5. Step 5: Solve for x
    x = 16,387,675.92/4,969.21
  6. Step 6: Final answer
    x = 3,297.84

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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.