Home / 4,789.86-7,178.58-2,321.25

Finding the Fourth Proportional to 4,789.86, 7,178.58 and 2,321.25

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Solution

The fourth proportional to 4,789.86, 7,178.58 and 2,321.25 is: 3,478.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.86 : 7,178.58 = 2,321.25 : x
  2. Step 2: Convert to fraction form
    4,789.86/7,178.58 = 2,321.25/x
  3. Step 3: Cross multiply
    4,789.86x = 7,178.58 × 2,321.25
  4. Step 4: Simplify right side
    4,789.86x = 16,663,278.83
  5. Step 5: Solve for x
    x = 16,663,278.83/4,789.86
  6. Step 6: Final answer
    x = 3,478.87

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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.