Home / 2,867.79-3,958.33-1,689.24

Finding the Fourth Proportional to 2,867.79, 3,958.33 and 1,689.24

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Solution

The fourth proportional to 2,867.79, 3,958.33 and 1,689.24 is: 2,331.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.79 : 3,958.33 = 1,689.24 : x
  2. Step 2: Convert to fraction form
    2,867.79/3,958.33 = 1,689.24/x
  3. Step 3: Cross multiply
    2,867.79x = 3,958.33 × 1,689.24
  4. Step 4: Simplify right side
    2,867.79x = 6,686,569.37
  5. Step 5: Solve for x
    x = 6,686,569.37/2,867.79
  6. Step 6: Final answer
    x = 2,331.61

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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.