Home / 2,665.50-3,999.20-1,933.80

Finding the Fourth Proportional to 2,665.50, 3,999.20 and 1,933.80

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Solution

The fourth proportional to 2,665.50, 3,999.20 and 1,933.80 is: 2,901.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.50 : 3,999.20 = 1,933.80 : x
  2. Step 2: Convert to fraction form
    2,665.50/3,999.20 = 1,933.80/x
  3. Step 3: Cross multiply
    2,665.50x = 3,999.20 × 1,933.80
  4. Step 4: Simplify right side
    2,665.50x = 7,733,652.96
  5. Step 5: Solve for x
    x = 7,733,652.96/2,665.50
  6. Step 6: Final answer
    x = 2,901.39

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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.