Home / 3,119.83-4,305.36-1,722.58

Finding the Fourth Proportional to 3,119.83, 4,305.36 and 1,722.58

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Solution

The fourth proportional to 3,119.83, 4,305.36 and 1,722.58 is: 2,377.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.83 : 4,305.36 = 1,722.58 : x
  2. Step 2: Convert to fraction form
    3,119.83/4,305.36 = 1,722.58/x
  3. Step 3: Cross multiply
    3,119.83x = 4,305.36 × 1,722.58
  4. Step 4: Simplify right side
    3,119.83x = 7,416,327.03
  5. Step 5: Solve for x
    x = 7,416,327.03/3,119.83
  6. Step 6: Final answer
    x = 2,377.16

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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.