Home / 3,856.21-5,783.40-2,211.91

Finding the Fourth Proportional to 3,856.21, 5,783.40 and 2,211.91

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Solution

The fourth proportional to 3,856.21, 5,783.40 and 2,211.91 is: 3,317.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.21 : 5,783.40 = 2,211.91 : x
  2. Step 2: Convert to fraction form
    3,856.21/5,783.40 = 2,211.91/x
  3. Step 3: Cross multiply
    3,856.21x = 5,783.40 × 2,211.91
  4. Step 4: Simplify right side
    3,856.21x = 12,792,345.84
  5. Step 5: Solve for x
    x = 12,792,345.84/3,856.21
  6. Step 6: Final answer
    x = 3,317.34

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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.