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Finding the Fourth Proportional to 1,878.67, 2,817.60 and 954.73

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Solution

The fourth proportional to 1,878.67, 2,817.60 and 954.73 is: 1,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.67 : 2,817.60 = 954.73 : x
  2. Step 2: Convert to fraction form
    1,878.67/2,817.60 = 954.73/x
  3. Step 3: Cross multiply
    1,878.67x = 2,817.60 × 954.73
  4. Step 4: Simplify right side
    1,878.67x = 2,690,047.25
  5. Step 5: Solve for x
    x = 2,690,047.25/1,878.67
  6. Step 6: Final answer
    x = 1,431.89

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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.