Home / 3,923.64-5,874.53-2,689.20

Finding the Fourth Proportional to 3,923.64, 5,874.53 and 2,689.20

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Solution

The fourth proportional to 3,923.64, 5,874.53 and 2,689.20 is: 4,026.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.64 : 5,874.53 = 2,689.20 : x
  2. Step 2: Convert to fraction form
    3,923.64/5,874.53 = 2,689.20/x
  3. Step 3: Cross multiply
    3,923.64x = 5,874.53 × 2,689.20
  4. Step 4: Simplify right side
    3,923.64x = 15,797,772.63
  5. Step 5: Solve for x
    x = 15,797,772.63/3,923.64
  6. Step 6: Final answer
    x = 4,026.31

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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.