Home / 1,273.76-1,911.20-1,224.08

Finding the Fourth Proportional to 1,273.76, 1,911.20 and 1,224.08

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Solution

The fourth proportional to 1,273.76, 1,911.20 and 1,224.08 is: 1,836.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.76 : 1,911.20 = 1,224.08 : x
  2. Step 2: Convert to fraction form
    1,273.76/1,911.20 = 1,224.08/x
  3. Step 3: Cross multiply
    1,273.76x = 1,911.20 × 1,224.08
  4. Step 4: Simplify right side
    1,273.76x = 2,339,461.70
  5. Step 5: Solve for x
    x = 2,339,461.70/1,273.76
  6. Step 6: Final answer
    x = 1,836.66

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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.