Home / 2,556.75-3,836.58-1,386.78

Finding the Fourth Proportional to 2,556.75, 3,836.58 and 1,386.78

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Solution

The fourth proportional to 2,556.75, 3,836.58 and 1,386.78 is: 2,080.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556.75 : 3,836.58 = 1,386.78 : x
  2. Step 2: Convert to fraction form
    2,556.75/3,836.58 = 1,386.78/x
  3. Step 3: Cross multiply
    2,556.75x = 3,836.58 × 1,386.78
  4. Step 4: Simplify right side
    2,556.75x = 5,320,492.41
  5. Step 5: Solve for x
    x = 5,320,492.41/2,556.75
  6. Step 6: Final answer
    x = 2,080.96

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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.