Home / 6,421.30-9,633.30-3,645.70

Finding the Fourth Proportional to 6,421.30, 9,633.30 and 3,645.70

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Solution

The fourth proportional to 6,421.30, 9,633.30 and 3,645.70 is: 5,469.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.30 : 9,633.30 = 3,645.70 : x
  2. Step 2: Convert to fraction form
    6,421.30/9,633.30 = 3,645.70/x
  3. Step 3: Cross multiply
    6,421.30x = 9,633.30 × 3,645.70
  4. Step 4: Simplify right side
    6,421.30x = 35,120,121.81
  5. Step 5: Solve for x
    x = 35,120,121.81/6,421.30
  6. Step 6: Final answer
    x = 5,469.32

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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.