Home / 1,918.16-2,872.68-1,096.88

Finding the Fourth Proportional to 1,918.16, 2,872.68 and 1,096.88

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Solution

The fourth proportional to 1,918.16, 2,872.68 and 1,096.88 is: 1,642.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.16 : 2,872.68 = 1,096.88 : x
  2. Step 2: Convert to fraction form
    1,918.16/2,872.68 = 1,096.88/x
  3. Step 3: Cross multiply
    1,918.16x = 2,872.68 × 1,096.88
  4. Step 4: Simplify right side
    1,918.16x = 3,150,985.24
  5. Step 5: Solve for x
    x = 3,150,985.24/1,918.16
  6. Step 6: Final answer
    x = 1,642.71

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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.