Home / 3,239.78-4,855.82-1,854.07

Finding the Fourth Proportional to 3,239.78, 4,855.82 and 1,854.07

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Solution

The fourth proportional to 3,239.78, 4,855.82 and 1,854.07 is: 2,778.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.78 : 4,855.82 = 1,854.07 : x
  2. Step 2: Convert to fraction form
    3,239.78/4,855.82 = 1,854.07/x
  3. Step 3: Cross multiply
    3,239.78x = 4,855.82 × 1,854.07
  4. Step 4: Simplify right side
    3,239.78x = 9,003,008.78
  5. Step 5: Solve for x
    x = 9,003,008.78/3,239.78
  6. Step 6: Final answer
    x = 2,778.90

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1.5x scale

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.