Home / 3,586.20-5,379.30-3,318.90

Finding the Fourth Proportional to 3,586.20, 5,379.30 and 3,318.90

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Solution

The fourth proportional to 3,586.20, 5,379.30 and 3,318.90 is: 4,978.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.20 : 5,379.30 = 3,318.90 : x
  2. Step 2: Convert to fraction form
    3,586.20/5,379.30 = 3,318.90/x
  3. Step 3: Cross multiply
    3,586.20x = 5,379.30 × 3,318.90
  4. Step 4: Simplify right side
    3,586.20x = 17,853,358.77
  5. Step 5: Solve for x
    x = 17,853,358.77/3,586.20
  6. Step 6: Final answer
    x = 4,978.35

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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.