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Finding the Fourth Proportional to 2,787.83, 4,181.97 and 938.93

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Solution

The fourth proportional to 2,787.83, 4,181.97 and 938.93 is: 1,408.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.83 : 4,181.97 = 938.93 : x
  2. Step 2: Convert to fraction form
    2,787.83/4,181.97 = 938.93/x
  3. Step 3: Cross multiply
    2,787.83x = 4,181.97 × 938.93
  4. Step 4: Simplify right side
    2,787.83x = 3,926,572.40
  5. Step 5: Solve for x
    x = 3,926,572.40/2,787.83
  6. Step 6: Final answer
    x = 1,408.47

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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.