Home / 3,003.40-4,505.10-2,638.90

Finding the Fourth Proportional to 3,003.40, 4,505.10 and 2,638.90

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Solution

The fourth proportional to 3,003.40, 4,505.10 and 2,638.90 is: 3,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.40 : 4,505.10 = 2,638.90 : x
  2. Step 2: Convert to fraction form
    3,003.40/4,505.10 = 2,638.90/x
  3. Step 3: Cross multiply
    3,003.40x = 4,505.10 × 2,638.90
  4. Step 4: Simplify right side
    3,003.40x = 11,888,508.39
  5. Step 5: Solve for x
    x = 11,888,508.39/3,003.40
  6. Step 6: Final answer
    x = 3,958.35

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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.