Home / 7,188.21-10,783.22-1,994.09

Finding the Fourth Proportional to 7,188.21, 10,783.22 and 1,994.09

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Solution

The fourth proportional to 7,188.21, 10,783.22 and 1,994.09 is: 2,991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.21 : 10,783.22 = 1,994.09 : x
  2. Step 2: Convert to fraction form
    7,188.21/10,783.22 = 1,994.09/x
  3. Step 3: Cross multiply
    7,188.21x = 10,783.22 × 1,994.09
  4. Step 4: Simplify right side
    7,188.21x = 21,502,647.28
  5. Step 5: Solve for x
    x = 21,502,647.28/7,188.21
  6. Step 6: Final answer
    x = 2,991.38

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1.5x scale

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.