Home / 4,189.12-6,278.24-1,993.28

Finding the Fourth Proportional to 4,189.12, 6,278.24 and 1,993.28

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Solution

The fourth proportional to 4,189.12, 6,278.24 and 1,993.28 is: 2,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.12 : 6,278.24 = 1,993.28 : x
  2. Step 2: Convert to fraction form
    4,189.12/6,278.24 = 1,993.28/x
  3. Step 3: Cross multiply
    4,189.12x = 6,278.24 × 1,993.28
  4. Step 4: Simplify right side
    4,189.12x = 12,514,290.23
  5. Step 5: Solve for x
    x = 12,514,290.23/4,189.12
  6. Step 6: Final answer
    x = 2,987.33

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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.