Home / 4,189.36-6,278.88-1,722.64

Finding the Fourth Proportional to 4,189.36, 6,278.88 and 1,722.64

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Solution

The fourth proportional to 4,189.36, 6,278.88 and 1,722.64 is: 2,581.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.36 : 6,278.88 = 1,722.64 : x
  2. Step 2: Convert to fraction form
    4,189.36/6,278.88 = 1,722.64/x
  3. Step 3: Cross multiply
    4,189.36x = 6,278.88 × 1,722.64
  4. Step 4: Simplify right side
    4,189.36x = 10,816,249.84
  5. Step 5: Solve for x
    x = 10,816,249.84/4,189.36
  6. Step 6: Final answer
    x = 2,581.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.