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Finding the Fourth Proportional to 1,899.44, 2,847 and 803.12

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Solution

The fourth proportional to 1,899.44, 2,847 and 803.12 is: 1,203.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.44 : 2,847 = 803.12 : x
  2. Step 2: Convert to fraction form
    1,899.44/2,847 = 803.12/x
  3. Step 3: Cross multiply
    1,899.44x = 2,847 × 803.12
  4. Step 4: Simplify right side
    1,899.44x = 2,286,482.64
  5. Step 5: Solve for x
    x = 2,286,482.64/1,899.44
  6. Step 6: Final answer
    x = 1,203.77

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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.