Home / 2,556.90-3,839.40-1,738.80

Finding the Fourth Proportional to 2,556.90, 3,839.40 and 1,738.80

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Solution

The fourth proportional to 2,556.90, 3,839.40 and 1,738.80 is: 2,610.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,556.90 : 3,839.40 = 1,738.80 : x
  2. Step 2: Convert to fraction form
    2,556.90/3,839.40 = 1,738.80/x
  3. Step 3: Cross multiply
    2,556.90x = 3,839.40 × 1,738.80
  4. Step 4: Simplify right side
    2,556.90x = 6,675,948.72
  5. Step 5: Solve for x
    x = 6,675,948.72/2,556.90
  6. Step 6: Final answer
    x = 2,610.95

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1.5x scale

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.