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Finding the Fourth Proportional to 2,731.89, 4,098.44 and 783.94

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Solution

The fourth proportional to 2,731.89, 4,098.44 and 783.94 is: 1,176.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,731.89 : 4,098.44 = 783.94 : x
  2. Step 2: Convert to fraction form
    2,731.89/4,098.44 = 783.94/x
  3. Step 3: Cross multiply
    2,731.89x = 4,098.44 × 783.94
  4. Step 4: Simplify right side
    2,731.89x = 3,212,931.05
  5. Step 5: Solve for x
    x = 3,212,931.05/2,731.89
  6. Step 6: Final answer
    x = 1,176.08

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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.