Home / 3,504.21-5,251.77-1,421.78

Finding the Fourth Proportional to 3,504.21, 5,251.77 and 1,421.78

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Solution

The fourth proportional to 3,504.21, 5,251.77 and 1,421.78 is: 2,130.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,504.21 : 5,251.77 = 1,421.78 : x
  2. Step 2: Convert to fraction form
    3,504.21/5,251.77 = 1,421.78/x
  3. Step 3: Cross multiply
    3,504.21x = 5,251.77 × 1,421.78
  4. Step 4: Simplify right side
    3,504.21x = 7,466,835.29
  5. Step 5: Solve for x
    x = 7,466,835.29/3,504.21
  6. Step 6: Final answer
    x = 2,130.82

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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.