Home / 4,982.39-6,878.16-3,860.78

Finding the Fourth Proportional to 4,982.39, 6,878.16 and 3,860.78

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Solution

The fourth proportional to 4,982.39, 6,878.16 and 3,860.78 is: 5,329.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,982.39 : 6,878.16 = 3,860.78 : x
  2. Step 2: Convert to fraction form
    4,982.39/6,878.16 = 3,860.78/x
  3. Step 3: Cross multiply
    4,982.39x = 6,878.16 × 3,860.78
  4. Step 4: Simplify right side
    4,982.39x = 26,555,079.76
  5. Step 5: Solve for x
    x = 26,555,079.76/4,982.39
  6. Step 6: Final answer
    x = 5,329.79

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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.