Home / 3,330.20-4,998.40-1,687.92

Finding the Fourth Proportional to 3,330.20, 4,998.40 and 1,687.92

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Solution

The fourth proportional to 3,330.20, 4,998.40 and 1,687.92 is: 2,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.20 : 4,998.40 = 1,687.92 : x
  2. Step 2: Convert to fraction form
    3,330.20/4,998.40 = 1,687.92/x
  3. Step 3: Cross multiply
    3,330.20x = 4,998.40 × 1,687.92
  4. Step 4: Simplify right side
    3,330.20x = 8,436,899.33
  5. Step 5: Solve for x
    x = 8,436,899.33/3,330.20
  6. Step 6: Final answer
    x = 2,533.45

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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.