Home / 3,985.47-5,499.41-2,216.73

Finding the Fourth Proportional to 3,985.47, 5,499.41 and 2,216.73

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Solution

The fourth proportional to 3,985.47, 5,499.41 and 2,216.73 is: 3,058.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.47 : 5,499.41 = 2,216.73 : x
  2. Step 2: Convert to fraction form
    3,985.47/5,499.41 = 2,216.73/x
  3. Step 3: Cross multiply
    3,985.47x = 5,499.41 × 2,216.73
  4. Step 4: Simplify right side
    3,985.47x = 12,190,696.05
  5. Step 5: Solve for x
    x = 12,190,696.05/3,985.47
  6. Step 6: Final answer
    x = 3,058.79

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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.