Home / 3,860.82-5,319.78-2,616.66

Finding the Fourth Proportional to 3,860.82, 5,319.78 and 2,616.66

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Solution

The fourth proportional to 3,860.82, 5,319.78 and 2,616.66 is: 3,605.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.82 : 5,319.78 = 2,616.66 : x
  2. Step 2: Convert to fraction form
    3,860.82/5,319.78 = 2,616.66/x
  3. Step 3: Cross multiply
    3,860.82x = 5,319.78 × 2,616.66
  4. Step 4: Simplify right side
    3,860.82x = 13,920,055.53
  5. Step 5: Solve for x
    x = 13,920,055.53/3,860.82
  6. Step 6: Final answer
    x = 3,605.47

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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.