Home / 3,645.21-5,033.57-2,857.89

Finding the Fourth Proportional to 3,645.21, 5,033.57 and 2,857.89

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Solution

The fourth proportional to 3,645.21, 5,033.57 and 2,857.89 is: 3,946.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,645.21 : 5,033.57 = 2,857.89 : x
  2. Step 2: Convert to fraction form
    3,645.21/5,033.57 = 2,857.89/x
  3. Step 3: Cross multiply
    3,645.21x = 5,033.57 × 2,857.89
  4. Step 4: Simplify right side
    3,645.21x = 14,385,375.08
  5. Step 5: Solve for x
    x = 14,385,375.08/3,645.21
  6. Step 6: Final answer
    x = 3,946.38

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1.5x scale

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.