Home / 5,645.20-8,469.40-2,359.76

Finding the Fourth Proportional to 5,645.20, 8,469.40 and 2,359.76

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Solution

The fourth proportional to 5,645.20, 8,469.40 and 2,359.76 is: 3,540.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.20 : 8,469.40 = 2,359.76 : x
  2. Step 2: Convert to fraction form
    5,645.20/8,469.40 = 2,359.76/x
  3. Step 3: Cross multiply
    5,645.20x = 8,469.40 × 2,359.76
  4. Step 4: Simplify right side
    5,645.20x = 19,985,751.34
  5. Step 5: Solve for x
    x = 19,985,751.34/5,645.20
  6. Step 6: Final answer
    x = 3,540.31

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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.