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Finding the Fourth Proportional to 6,867.26, 9,479.42 and 4,218.26

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Solution

The fourth proportional to 6,867.26, 9,479.42 and 4,218.26 is: 5,822.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,867.26 : 9,479.42 = 4,218.26 : x
  2. Step 2: Convert to fraction form
    6,867.26/9,479.42 = 4,218.26/x
  3. Step 3: Cross multiply
    6,867.26x = 9,479.42 × 4,218.26
  4. Step 4: Simplify right side
    6,867.26x = 39,986,637.12
  5. Step 5: Solve for x
    x = 39,986,637.12/6,867.26
  6. Step 6: Final answer
    x = 5,822.79

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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.