Home / 3,613.21-5,415.68-1,640.34

Finding the Fourth Proportional to 3,613.21, 5,415.68 and 1,640.34

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Solution

The fourth proportional to 3,613.21, 5,415.68 and 1,640.34 is: 2,458.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.21 : 5,415.68 = 1,640.34 : x
  2. Step 2: Convert to fraction form
    3,613.21/5,415.68 = 1,640.34/x
  3. Step 3: Cross multiply
    3,613.21x = 5,415.68 × 1,640.34
  4. Step 4: Simplify right side
    3,613.21x = 8,883,560.63
  5. Step 5: Solve for x
    x = 8,883,560.63/3,613.21
  6. Step 6: Final answer
    x = 2,458.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.