Home / 4,090.70-5,645.79-2,519.90

Finding the Fourth Proportional to 4,090.70, 5,645.79 and 2,519.90

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Solution

The fourth proportional to 4,090.70, 5,645.79 and 2,519.90 is: 3,477.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.70 : 5,645.79 = 2,519.90 : x
  2. Step 2: Convert to fraction form
    4,090.70/5,645.79 = 2,519.90/x
  3. Step 3: Cross multiply
    4,090.70x = 5,645.79 × 2,519.90
  4. Step 4: Simplify right side
    4,090.70x = 14,226,826.22
  5. Step 5: Solve for x
    x = 14,226,826.22/4,090.70
  6. Step 6: Final answer
    x = 3,477.85

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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.