Home / 3,689.30-5,090.85-2,272.77

Finding the Fourth Proportional to 3,689.30, 5,090.85 and 2,272.77

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Solution

The fourth proportional to 3,689.30, 5,090.85 and 2,272.77 is: 3,136.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.30 : 5,090.85 = 2,272.77 : x
  2. Step 2: Convert to fraction form
    3,689.30/5,090.85 = 2,272.77/x
  3. Step 3: Cross multiply
    3,689.30x = 5,090.85 × 2,272.77
  4. Step 4: Simplify right side
    3,689.30x = 11,570,331.15
  5. Step 5: Solve for x
    x = 11,570,331.15/3,689.30
  6. Step 6: Final answer
    x = 3,136.19

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Half scale
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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.