Home / 2,867.67-3,959.27-1,986.18

Finding the Fourth Proportional to 2,867.67, 3,959.27 and 1,986.18

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Solution

The fourth proportional to 2,867.67, 3,959.27 and 1,986.18 is: 2,742.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.67 : 3,959.27 = 1,986.18 : x
  2. Step 2: Convert to fraction form
    2,867.67/3,959.27 = 1,986.18/x
  3. Step 3: Cross multiply
    2,867.67x = 3,959.27 × 1,986.18
  4. Step 4: Simplify right side
    2,867.67x = 7,863,812.96
  5. Step 5: Solve for x
    x = 7,863,812.96/2,867.67
  6. Step 6: Final answer
    x = 2,742.23

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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.