Home / 2,213.10-3,319.65-1,119.60

Finding the Fourth Proportional to 2,213.10, 3,319.65 and 1,119.60

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Solution

The fourth proportional to 2,213.10, 3,319.65 and 1,119.60 is: 1,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.10 : 3,319.65 = 1,119.60 : x
  2. Step 2: Convert to fraction form
    2,213.10/3,319.65 = 1,119.60/x
  3. Step 3: Cross multiply
    2,213.10x = 3,319.65 × 1,119.60
  4. Step 4: Simplify right side
    2,213.10x = 3,716,680.14
  5. Step 5: Solve for x
    x = 3,716,680.14/2,213.10
  6. Step 6: Final answer
    x = 1,679.40

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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.