Home / 3,240.91-4,857.50-1,855.20

Finding the Fourth Proportional to 3,240.91, 4,857.50 and 1,855.20

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Solution

The fourth proportional to 3,240.91, 4,857.50 and 1,855.20 is: 2,780.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.91 : 4,857.50 = 1,855.20 : x
  2. Step 2: Convert to fraction form
    3,240.91/4,857.50 = 1,855.20/x
  3. Step 3: Cross multiply
    3,240.91x = 4,857.50 × 1,855.20
  4. Step 4: Simplify right side
    3,240.91x = 9,011,656.85
  5. Step 5: Solve for x
    x = 9,011,656.85/3,240.91
  6. Step 6: Final answer
    x = 2,780.59

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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.