Home / 3,137.09-4,329.19-1,720.79

Finding the Fourth Proportional to 3,137.09, 4,329.19 and 1,720.79

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Solution

The fourth proportional to 3,137.09, 4,329.19 and 1,720.79 is: 2,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.09 : 4,329.19 = 1,720.79 : x
  2. Step 2: Convert to fraction form
    3,137.09/4,329.19 = 1,720.79/x
  3. Step 3: Cross multiply
    3,137.09x = 4,329.19 × 1,720.79
  4. Step 4: Simplify right side
    3,137.09x = 7,449,626.86
  5. Step 5: Solve for x
    x = 7,449,626.86/3,137.09
  6. Step 6: Final answer
    x = 2,374.69

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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.