Home / 5,645.30-7,789.20-3,406.35

Finding the Fourth Proportional to 5,645.30, 7,789.20 and 3,406.35

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Solution

The fourth proportional to 5,645.30, 7,789.20 and 3,406.35 is: 4,699.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,645.30 : 7,789.20 = 3,406.35 : x
  2. Step 2: Convert to fraction form
    5,645.30/7,789.20 = 3,406.35/x
  3. Step 3: Cross multiply
    5,645.30x = 7,789.20 × 3,406.35
  4. Step 4: Simplify right side
    5,645.30x = 26,532,757.86
  5. Step 5: Solve for x
    x = 26,532,757.86/5,645.30
  6. Step 6: Final answer
    x = 4,699.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.