Home / 2,399.65-3,311.75-1,404.87

Finding the Fourth Proportional to 2,399.65, 3,311.75 and 1,404.87

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Solution

The fourth proportional to 2,399.65, 3,311.75 and 1,404.87 is: 1,938.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.65 : 3,311.75 = 1,404.87 : x
  2. Step 2: Convert to fraction form
    2,399.65/3,311.75 = 1,404.87/x
  3. Step 3: Cross multiply
    2,399.65x = 3,311.75 × 1,404.87
  4. Step 4: Simplify right side
    2,399.65x = 4,652,578.22
  5. Step 5: Solve for x
    x = 4,652,578.22/2,399.65
  6. Step 6: Final answer
    x = 1,938.86

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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.