Home / 3,894.36-5,374.32-2,215.68

Finding the Fourth Proportional to 3,894.36, 5,374.32 and 2,215.68

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Solution

The fourth proportional to 3,894.36, 5,374.32 and 2,215.68 is: 3,057.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.36 : 5,374.32 = 2,215.68 : x
  2. Step 2: Convert to fraction form
    3,894.36/5,374.32 = 2,215.68/x
  3. Step 3: Cross multiply
    3,894.36x = 5,374.32 × 2,215.68
  4. Step 4: Simplify right side
    3,894.36x = 11,907,773.34
  5. Step 5: Solve for x
    x = 11,907,773.34/3,894.36
  6. Step 6: Final answer
    x = 3,057.70

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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.