Home / 3,985.11-5,499.45-2,216.70

Finding the Fourth Proportional to 3,985.11, 5,499.45 and 2,216.70

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Solution

The fourth proportional to 3,985.11, 5,499.45 and 2,216.70 is: 3,059.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.11 : 5,499.45 = 2,216.70 : x
  2. Step 2: Convert to fraction form
    3,985.11/5,499.45 = 2,216.70/x
  3. Step 3: Cross multiply
    3,985.11x = 5,499.45 × 2,216.70
  4. Step 4: Simplify right side
    3,985.11x = 12,190,630.82
  5. Step 5: Solve for x
    x = 12,190,630.82/3,985.11
  6. Step 6: Final answer
    x = 3,059.04

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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.