Home / 2,399.85-3,311.80-1,404.93

Finding the Fourth Proportional to 2,399.85, 3,311.80 and 1,404.93

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Solution

The fourth proportional to 2,399.85, 3,311.80 and 1,404.93 is: 1,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.85 : 3,311.80 = 1,404.93 : x
  2. Step 2: Convert to fraction form
    2,399.85/3,311.80 = 1,404.93/x
  3. Step 3: Cross multiply
    2,399.85x = 3,311.80 × 1,404.93
  4. Step 4: Simplify right side
    2,399.85x = 4,652,843.66
  5. Step 5: Solve for x
    x = 4,652,843.66/2,399.85
  6. Step 6: Final answer
    x = 1,938.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.