Home / 2,939.45-4,410.90-1,185.30

Finding the Fourth Proportional to 2,939.45, 4,410.90 and 1,185.30

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Solution

The fourth proportional to 2,939.45, 4,410.90 and 1,185.30 is: 1,778.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.45 : 4,410.90 = 1,185.30 : x
  2. Step 2: Convert to fraction form
    2,939.45/4,410.90 = 1,185.30/x
  3. Step 3: Cross multiply
    2,939.45x = 4,410.90 × 1,185.30
  4. Step 4: Simplify right side
    2,939.45x = 5,228,239.77
  5. Step 5: Solve for x
    x = 5,228,239.77/2,939.45
  6. Step 6: Final answer
    x = 1,778.65

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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.