Home / 3,890.37-5,368.50-2,211.54

Finding the Fourth Proportional to 3,890.37, 5,368.50 and 2,211.54

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Solution

The fourth proportional to 3,890.37, 5,368.50 and 2,211.54 is: 3,051.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.37 : 5,368.50 = 2,211.54 : x
  2. Step 2: Convert to fraction form
    3,890.37/5,368.50 = 2,211.54/x
  3. Step 3: Cross multiply
    3,890.37x = 5,368.50 × 2,211.54
  4. Step 4: Simplify right side
    3,890.37x = 11,872,652.49
  5. Step 5: Solve for x
    x = 11,872,652.49/3,890.37
  6. Step 6: Final answer
    x = 3,051.81

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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.