Home / 3,530.21-5,291.60-1,680.44

Finding the Fourth Proportional to 3,530.21, 5,291.60 and 1,680.44

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Solution

The fourth proportional to 3,530.21, 5,291.60 and 1,680.44 is: 2,518.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,530.21 : 5,291.60 = 1,680.44 : x
  2. Step 2: Convert to fraction form
    3,530.21/5,291.60 = 1,680.44/x
  3. Step 3: Cross multiply
    3,530.21x = 5,291.60 × 1,680.44
  4. Step 4: Simplify right side
    3,530.21x = 8,892,181.44
  5. Step 5: Solve for x
    x = 8,892,181.44/3,530.21
  6. Step 6: Final answer
    x = 2,518.89

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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.