Home / 3,765.35-5,198.61-2,421.56

Finding the Fourth Proportional to 3,765.35, 5,198.61 and 2,421.56

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Solution

The fourth proportional to 3,765.35, 5,198.61 and 2,421.56 is: 3,343.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,765.35 : 5,198.61 = 2,421.56 : x
  2. Step 2: Convert to fraction form
    3,765.35/5,198.61 = 2,421.56/x
  3. Step 3: Cross multiply
    3,765.35x = 5,198.61 × 2,421.56
  4. Step 4: Simplify right side
    3,765.35x = 12,588,720.04
  5. Step 5: Solve for x
    x = 12,588,720.04/3,765.35
  6. Step 6: Final answer
    x = 3,343.31

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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.