Home / 4,090.26-6,129.30-2,628.20

Finding the Fourth Proportional to 4,090.26, 6,129.30 and 2,628.20

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Solution

The fourth proportional to 4,090.26, 6,129.30 and 2,628.20 is: 3,938.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.26 : 6,129.30 = 2,628.20 : x
  2. Step 2: Convert to fraction form
    4,090.26/6,129.30 = 2,628.20/x
  3. Step 3: Cross multiply
    4,090.26x = 6,129.30 × 2,628.20
  4. Step 4: Simplify right side
    4,090.26x = 16,109,026.26
  5. Step 5: Solve for x
    x = 16,109,026.26/4,090.26
  6. Step 6: Final answer
    x = 3,938.39

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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.