Home / 6,862.44-9,469.68-3,878.40

Finding the Fourth Proportional to 6,862.44, 9,469.68 and 3,878.40

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Solution

The fourth proportional to 6,862.44, 9,469.68 and 3,878.40 is: 5,351.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,862.44 : 9,469.68 = 3,878.40 : x
  2. Step 2: Convert to fraction form
    6,862.44/9,469.68 = 3,878.40/x
  3. Step 3: Cross multiply
    6,862.44x = 9,469.68 × 3,878.40
  4. Step 4: Simplify right side
    6,862.44x = 36,727,206.91
  5. Step 5: Solve for x
    x = 36,727,206.91/6,862.44
  6. Step 6: Final answer
    x = 5,351.92

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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.