Home / 7,853.49-11,772.81-2,919.78

Finding the Fourth Proportional to 7,853.49, 11,772.81 and 2,919.78

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Solution

The fourth proportional to 7,853.49, 11,772.81 and 2,919.78 is: 4,376.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,853.49 : 11,772.81 = 2,919.78 : x
  2. Step 2: Convert to fraction form
    7,853.49/11,772.81 = 2,919.78/x
  3. Step 3: Cross multiply
    7,853.49x = 11,772.81 × 2,919.78
  4. Step 4: Simplify right side
    7,853.49x = 34,374,015.18
  5. Step 5: Solve for x
    x = 34,374,015.18/7,853.49
  6. Step 6: Final answer
    x = 4,376.91

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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.