Home / 3,217.04-4,823.40-1,986.80

Finding the Fourth Proportional to 3,217.04, 4,823.40 and 1,986.80

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Solution

The fourth proportional to 3,217.04, 4,823.40 and 1,986.80 is: 2,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,217.04 : 4,823.40 = 1,986.80 : x
  2. Step 2: Convert to fraction form
    3,217.04/4,823.40 = 1,986.80/x
  3. Step 3: Cross multiply
    3,217.04x = 4,823.40 × 1,986.80
  4. Step 4: Simplify right side
    3,217.04x = 9,583,131.12
  5. Step 5: Solve for x
    x = 9,583,131.12/3,217.04
  6. Step 6: Final answer
    x = 2,978.87

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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.