Home / 3,636.89-5,019.45-2,221.40

Finding the Fourth Proportional to 3,636.89, 5,019.45 and 2,221.40

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Solution

The fourth proportional to 3,636.89, 5,019.45 and 2,221.40 is: 3,065.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,636.89 : 5,019.45 = 2,221.40 : x
  2. Step 2: Convert to fraction form
    3,636.89/5,019.45 = 2,221.40/x
  3. Step 3: Cross multiply
    3,636.89x = 5,019.45 × 2,221.40
  4. Step 4: Simplify right side
    3,636.89x = 11,150,181.13
  5. Step 5: Solve for x
    x = 11,150,181.13/3,636.89
  6. Step 6: Final answer
    x = 3,065.86

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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.