Home / 3,586.31-5,379.45-1,121.12

Finding the Fourth Proportional to 3,586.31, 5,379.45 and 1,121.12

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Solution

The fourth proportional to 3,586.31, 5,379.45 and 1,121.12 is: 1,681.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.31 : 5,379.45 = 1,121.12 : x
  2. Step 2: Convert to fraction form
    3,586.31/5,379.45 = 1,121.12/x
  3. Step 3: Cross multiply
    3,586.31x = 5,379.45 × 1,121.12
  4. Step 4: Simplify right side
    3,586.31x = 6,031,022.43
  5. Step 5: Solve for x
    x = 6,031,022.43/3,586.31
  6. Step 6: Final answer
    x = 1,681.68

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Double scale
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Similar ratio
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1.5x scale

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.