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Finding the Fourth Proportional to 1,905.53, 2,860.11 and 1,493.64

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Solution

The fourth proportional to 1,905.53, 2,860.11 and 1,493.64 is: 2,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.53 : 2,860.11 = 1,493.64 : x
  2. Step 2: Convert to fraction form
    1,905.53/2,860.11 = 1,493.64/x
  3. Step 3: Cross multiply
    1,905.53x = 2,860.11 × 1,493.64
  4. Step 4: Simplify right side
    1,905.53x = 4,271,974.70
  5. Step 5: Solve for x
    x = 4,271,974.70/1,905.53
  6. Step 6: Final answer
    x = 2,241.89

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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.