Home / 4,919.36-6,781.56-3,974.96

Finding the Fourth Proportional to 4,919.36, 6,781.56 and 3,974.96

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Solution

The fourth proportional to 4,919.36, 6,781.56 and 3,974.96 is: 5,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.36 : 6,781.56 = 3,974.96 : x
  2. Step 2: Convert to fraction form
    4,919.36/6,781.56 = 3,974.96/x
  3. Step 3: Cross multiply
    4,919.36x = 6,781.56 × 3,974.96
  4. Step 4: Simplify right side
    4,919.36x = 26,956,429.74
  5. Step 5: Solve for x
    x = 26,956,429.74/4,919.36
  6. Step 6: Final answer
    x = 5,479.66

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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.