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Finding the Fourth Proportional to 7,188.16, 10,783.88 and 1,994.44

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Solution

The fourth proportional to 7,188.16, 10,783.88 and 1,994.44 is: 2,992.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.16 : 10,783.88 = 1,994.44 : x
  2. Step 2: Convert to fraction form
    7,188.16/10,783.88 = 1,994.44/x
  3. Step 3: Cross multiply
    7,188.16x = 10,783.88 × 1,994.44
  4. Step 4: Simplify right side
    7,188.16x = 21,507,801.63
  5. Step 5: Solve for x
    x = 21,507,801.63/7,188.16
  6. Step 6: Final answer
    x = 2,992.12

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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.