Home / 3,520.13-4,860-2,195.78

Finding the Fourth Proportional to 3,520.13, 4,860 and 2,195.78

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Solution

The fourth proportional to 3,520.13, 4,860 and 2,195.78 is: 3,031.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.13 : 4,860 = 2,195.78 : x
  2. Step 2: Convert to fraction form
    3,520.13/4,860 = 2,195.78/x
  3. Step 3: Cross multiply
    3,520.13x = 4,860 × 2,195.78
  4. Step 4: Simplify right side
    3,520.13x = 10,671,466.50
  5. Step 5: Solve for x
    x = 10,671,466.50/3,520.13
  6. Step 6: Final answer
    x = 3,031.56

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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.