Home / 2,893.20-3,994.32-1,900.21

Finding the Fourth Proportional to 2,893.20, 3,994.32 and 1,900.21

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Solution

The fourth proportional to 2,893.20, 3,994.32 and 1,900.21 is: 2,623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,893.20 : 3,994.32 = 1,900.21 : x
  2. Step 2: Convert to fraction form
    2,893.20/3,994.32 = 1,900.21/x
  3. Step 3: Cross multiply
    2,893.20x = 3,994.32 × 1,900.21
  4. Step 4: Simplify right side
    2,893.20x = 7,590,046.81
  5. Step 5: Solve for x
    x = 7,590,046.81/2,893.20
  6. Step 6: Final answer
    x = 2,623.41

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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.