Home / 2,122.74-2,929.93-1,191.54

Finding the Fourth Proportional to 2,122.74, 2,929.93 and 1,191.54

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Solution

The fourth proportional to 2,122.74, 2,929.93 and 1,191.54 is: 1,644.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.74 : 2,929.93 = 1,191.54 : x
  2. Step 2: Convert to fraction form
    2,122.74/2,929.93 = 1,191.54/x
  3. Step 3: Cross multiply
    2,122.74x = 2,929.93 × 1,191.54
  4. Step 4: Simplify right side
    2,122.74x = 3,491,128.79
  5. Step 5: Solve for x
    x = 3,491,128.79/2,122.74
  6. Step 6: Final answer
    x = 1,644.63

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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.