Home / 2,112.68-2,915.80-1,273.93

Finding the Fourth Proportional to 2,112.68, 2,915.80 and 1,273.93

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Solution

The fourth proportional to 2,112.68, 2,915.80 and 1,273.93 is: 1,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.68 : 2,915.80 = 1,273.93 : x
  2. Step 2: Convert to fraction form
    2,112.68/2,915.80 = 1,273.93/x
  3. Step 3: Cross multiply
    2,112.68x = 2,915.80 × 1,273.93
  4. Step 4: Simplify right side
    2,112.68x = 3,714,514.62
  5. Step 5: Solve for x
    x = 3,714,514.62/2,112.68
  6. Step 6: Final answer
    x = 1,758.20

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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.