Home / 3,893.40-5,374.62-2,636.28

Finding the Fourth Proportional to 3,893.40, 5,374.62 and 2,636.28

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Solution

The fourth proportional to 3,893.40, 5,374.62 and 2,636.28 is: 3,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.40 : 5,374.62 = 2,636.28 : x
  2. Step 2: Convert to fraction form
    3,893.40/5,374.62 = 2,636.28/x
  3. Step 3: Cross multiply
    3,893.40x = 5,374.62 × 2,636.28
  4. Step 4: Simplify right side
    3,893.40x = 14,169,003.21
  5. Step 5: Solve for x
    x = 14,169,003.21/3,893.40
  6. Step 6: Final answer
    x = 3,639.24

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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.