Home / 3,586.25-5,379.36-1,121.31

Finding the Fourth Proportional to 3,586.25, 5,379.36 and 1,121.31

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Solution

The fourth proportional to 3,586.25, 5,379.36 and 1,121.31 is: 1,681.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.25 : 5,379.36 = 1,121.31 : x
  2. Step 2: Convert to fraction form
    3,586.25/5,379.36 = 1,121.31/x
  3. Step 3: Cross multiply
    3,586.25x = 5,379.36 × 1,121.31
  4. Step 4: Simplify right side
    3,586.25x = 6,031,930.16
  5. Step 5: Solve for x
    x = 6,031,930.16/3,586.25
  6. Step 6: Final answer
    x = 1,681.96

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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.