Home / 2,860.78-3,948.54-1,682.23

Finding the Fourth Proportional to 2,860.78, 3,948.54 and 1,682.23

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Solution

The fourth proportional to 2,860.78, 3,948.54 and 1,682.23 is: 2,321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.78 : 3,948.54 = 1,682.23 : x
  2. Step 2: Convert to fraction form
    2,860.78/3,948.54 = 1,682.23/x
  3. Step 3: Cross multiply
    2,860.78x = 3,948.54 × 1,682.23
  4. Step 4: Simplify right side
    2,860.78x = 6,642,352.44
  5. Step 5: Solve for x
    x = 6,642,352.44/2,860.78
  6. Step 6: Final answer
    x = 2,321.87

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1.5x scale

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.