Home / 2,681.65-4,022.52-1,121.89

Finding the Fourth Proportional to 2,681.65, 4,022.52 and 1,121.89

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Solution

The fourth proportional to 2,681.65, 4,022.52 and 1,121.89 is: 1,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.65 : 4,022.52 = 1,121.89 : x
  2. Step 2: Convert to fraction form
    2,681.65/4,022.52 = 1,121.89/x
  3. Step 3: Cross multiply
    2,681.65x = 4,022.52 × 1,121.89
  4. Step 4: Simplify right side
    2,681.65x = 4,512,824.96
  5. Step 5: Solve for x
    x = 4,512,824.96/2,681.65
  6. Step 6: Final answer
    x = 1,682.85

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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.