Home / 3,699.28-5,105.05-2,020.74

Finding the Fourth Proportional to 3,699.28, 5,105.05 and 2,020.74

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Solution

The fourth proportional to 3,699.28, 5,105.05 and 2,020.74 is: 2,788.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.28 : 5,105.05 = 2,020.74 : x
  2. Step 2: Convert to fraction form
    3,699.28/5,105.05 = 2,020.74/x
  3. Step 3: Cross multiply
    3,699.28x = 5,105.05 × 2,020.74
  4. Step 4: Simplify right side
    3,699.28x = 10,315,978.74
  5. Step 5: Solve for x
    x = 10,315,978.74/3,699.28
  6. Step 6: Final answer
    x = 2,788.65

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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.