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Finding the Fourth Proportional to 3,221.78, 4,835.50 and 1,837.89

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Solution

The fourth proportional to 3,221.78, 4,835.50 and 1,837.89 is: 2,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.78 : 4,835.50 = 1,837.89 : x
  2. Step 2: Convert to fraction form
    3,221.78/4,835.50 = 1,837.89/x
  3. Step 3: Cross multiply
    3,221.78x = 4,835.50 × 1,837.89
  4. Step 4: Simplify right side
    3,221.78x = 8,887,112.50
  5. Step 5: Solve for x
    x = 8,887,112.50/3,221.78
  6. Step 6: Final answer
    x = 2,758.45

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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.