Home / 2,399.43-3,312.36-1,404.39

Finding the Fourth Proportional to 2,399.43, 3,312.36 and 1,404.39

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Solution

The fourth proportional to 2,399.43, 3,312.36 and 1,404.39 is: 1,938.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.43 : 3,312.36 = 1,404.39 : x
  2. Step 2: Convert to fraction form
    2,399.43/3,312.36 = 1,404.39/x
  3. Step 3: Cross multiply
    2,399.43x = 3,312.36 × 1,404.39
  4. Step 4: Simplify right side
    2,399.43x = 4,651,845.26
  5. Step 5: Solve for x
    x = 4,651,845.26/2,399.43
  6. Step 6: Final answer
    x = 1,938.73

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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.