Home / 1,951.16-2,926.33-911.65

Finding the Fourth Proportional to 1,951.16, 2,926.33 and 911.65

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Solution

The fourth proportional to 1,951.16, 2,926.33 and 911.65 is: 1,367.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.16 : 2,926.33 = 911.65 : x
  2. Step 2: Convert to fraction form
    1,951.16/2,926.33 = 911.65/x
  3. Step 3: Cross multiply
    1,951.16x = 2,926.33 × 911.65
  4. Step 4: Simplify right side
    1,951.16x = 2,667,782.58
  5. Step 5: Solve for x
    x = 2,667,782.58/1,951.16
  6. Step 6: Final answer
    x = 1,367.28

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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.