Home / 3,985.30-5,975.67-1,211.15

Finding the Fourth Proportional to 3,985.30, 5,975.67 and 1,211.15

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Solution

The fourth proportional to 3,985.30, 5,975.67 and 1,211.15 is: 1,816.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.30 : 5,975.67 = 1,211.15 : x
  2. Step 2: Convert to fraction form
    3,985.30/5,975.67 = 1,211.15/x
  3. Step 3: Cross multiply
    3,985.30x = 5,975.67 × 1,211.15
  4. Step 4: Simplify right side
    3,985.30x = 7,237,452.20
  5. Step 5: Solve for x
    x = 7,237,452.20/3,985.30
  6. Step 6: Final answer
    x = 1,816.04

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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.