Home / 6,862.29-9,469.89-3,878.13

Finding the Fourth Proportional to 6,862.29, 9,469.89 and 3,878.13

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Solution

The fourth proportional to 6,862.29, 9,469.89 and 3,878.13 is: 5,351.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,862.29 : 9,469.89 = 3,878.13 : x
  2. Step 2: Convert to fraction form
    6,862.29/9,469.89 = 3,878.13/x
  3. Step 3: Cross multiply
    6,862.29x = 9,469.89 × 3,878.13
  4. Step 4: Simplify right side
    6,862.29x = 36,725,464.51
  5. Step 5: Solve for x
    x = 36,725,464.51/6,862.29
  6. Step 6: Final answer
    x = 5,351.78

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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.