Home / 6,860.80-9,467.76-4,067.20

Finding the Fourth Proportional to 6,860.80, 9,467.76 and 4,067.20

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Solution

The fourth proportional to 6,860.80, 9,467.76 and 4,067.20 is: 5,612.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,860.80 : 9,467.76 = 4,067.20 : x
  2. Step 2: Convert to fraction form
    6,860.80/9,467.76 = 4,067.20/x
  3. Step 3: Cross multiply
    6,860.80x = 9,467.76 × 4,067.20
  4. Step 4: Simplify right side
    6,860.80x = 38,507,273.47
  5. Step 5: Solve for x
    x = 38,507,273.47/6,860.80
  6. Step 6: Final answer
    x = 5,612.65

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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.