Home / 3,509.21-5,257.87-2,119.63

Finding the Fourth Proportional to 3,509.21, 5,257.87 and 2,119.63

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Solution

The fourth proportional to 3,509.21, 5,257.87 and 2,119.63 is: 3,175.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,509.21 : 5,257.87 = 2,119.63 : x
  2. Step 2: Convert to fraction form
    3,509.21/5,257.87 = 2,119.63/x
  3. Step 3: Cross multiply
    3,509.21x = 5,257.87 × 2,119.63
  4. Step 4: Simplify right side
    3,509.21x = 11,144,708.94
  5. Step 5: Solve for x
    x = 11,144,708.94/3,509.21
  6. Step 6: Final answer
    x = 3,175.85

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1.5x scale

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.