Home / 2,114.20-2,918.12-1,229.88

Finding the Fourth Proportional to 2,114.20, 2,918.12 and 1,229.88

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Solution

The fourth proportional to 2,114.20, 2,918.12 and 1,229.88 is: 1,697.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.20 : 2,918.12 = 1,229.88 : x
  2. Step 2: Convert to fraction form
    2,114.20/2,918.12 = 1,229.88/x
  3. Step 3: Cross multiply
    2,114.20x = 2,918.12 × 1,229.88
  4. Step 4: Simplify right side
    2,114.20x = 3,588,937.43
  5. Step 5: Solve for x
    x = 3,588,937.43/2,114.20
  6. Step 6: Final answer
    x = 1,697.54

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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.