Home / 2,860.79-3,948.68-1,682.24

Finding the Fourth Proportional to 2,860.79, 3,948.68 and 1,682.24

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Solution

The fourth proportional to 2,860.79, 3,948.68 and 1,682.24 is: 2,321.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.79 : 3,948.68 = 1,682.24 : x
  2. Step 2: Convert to fraction form
    2,860.79/3,948.68 = 1,682.24/x
  3. Step 3: Cross multiply
    2,860.79x = 3,948.68 × 1,682.24
  4. Step 4: Simplify right side
    2,860.79x = 6,642,628.90
  5. Step 5: Solve for x
    x = 6,642,628.90/2,860.79
  6. Step 6: Final answer
    x = 2,321.95

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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.