Home / 2,213.20-3,316.72-2,146.68

Finding the Fourth Proportional to 2,213.20, 3,316.72 and 2,146.68

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Solution

The fourth proportional to 2,213.20, 3,316.72 and 2,146.68 is: 3,217.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.20 : 3,316.72 = 2,146.68 : x
  2. Step 2: Convert to fraction form
    2,213.20/3,316.72 = 2,146.68/x
  3. Step 3: Cross multiply
    2,213.20x = 3,316.72 × 2,146.68
  4. Step 4: Simplify right side
    2,213.20x = 7,119,931.86
  5. Step 5: Solve for x
    x = 7,119,931.86/2,213.20
  6. Step 6: Final answer
    x = 3,217.03

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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.