Home / 2,485.21-3,728.49-2,213.19

Finding the Fourth Proportional to 2,485.21, 3,728.49 and 2,213.19

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Solution

The fourth proportional to 2,485.21, 3,728.49 and 2,213.19 is: 3,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.21 : 3,728.49 = 2,213.19 : x
  2. Step 2: Convert to fraction form
    2,485.21/3,728.49 = 2,213.19/x
  3. Step 3: Cross multiply
    2,485.21x = 3,728.49 × 2,213.19
  4. Step 4: Simplify right side
    2,485.21x = 8,251,856.78
  5. Step 5: Solve for x
    x = 8,251,856.78/2,485.21
  6. Step 6: Final answer
    x = 3,320.39

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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.