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Finding the Fourth Proportional to 1,855.62, 2,560.57 and 1,109.43

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Solution

The fourth proportional to 1,855.62, 2,560.57 and 1,109.43 is: 1,530.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.62 : 2,560.57 = 1,109.43 : x
  2. Step 2: Convert to fraction form
    1,855.62/2,560.57 = 1,109.43/x
  3. Step 3: Cross multiply
    1,855.62x = 2,560.57 × 1,109.43
  4. Step 4: Simplify right side
    1,855.62x = 2,840,773.18
  5. Step 5: Solve for x
    x = 2,840,773.18/1,855.62
  6. Step 6: Final answer
    x = 1,530.90

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.