Home / 3,312.30-4,968.90-1,231.80

Finding the Fourth Proportional to 3,312.30, 4,968.90 and 1,231.80

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Solution

The fourth proportional to 3,312.30, 4,968.90 and 1,231.80 is: 1,847.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.30 : 4,968.90 = 1,231.80 : x
  2. Step 2: Convert to fraction form
    3,312.30/4,968.90 = 1,231.80/x
  3. Step 3: Cross multiply
    3,312.30x = 4,968.90 × 1,231.80
  4. Step 4: Simplify right side
    3,312.30x = 6,120,691.02
  5. Step 5: Solve for x
    x = 6,120,691.02/3,312.30
  6. Step 6: Final answer
    x = 1,847.87

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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.