Home / 2,578.12-3,867.66-846.84

Finding the Fourth Proportional to 2,578.12, 3,867.66 and 846.84

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Solution

The fourth proportional to 2,578.12, 3,867.66 and 846.84 is: 1,270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.12 : 3,867.66 = 846.84 : x
  2. Step 2: Convert to fraction form
    2,578.12/3,867.66 = 846.84/x
  3. Step 3: Cross multiply
    2,578.12x = 3,867.66 × 846.84
  4. Step 4: Simplify right side
    2,578.12x = 3,275,289.19
  5. Step 5: Solve for x
    x = 3,275,289.19/2,578.12
  6. Step 6: Final answer
    x = 1,270.42

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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.