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Finding the Fourth Proportional to 2,678.61, 4,017.51 and 730.97

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Solution

The fourth proportional to 2,678.61, 4,017.51 and 730.97 is: 1,096.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.61 : 4,017.51 = 730.97 : x
  2. Step 2: Convert to fraction form
    2,678.61/4,017.51 = 730.97/x
  3. Step 3: Cross multiply
    2,678.61x = 4,017.51 × 730.97
  4. Step 4: Simplify right side
    2,678.61x = 2,936,679.28
  5. Step 5: Solve for x
    x = 2,936,679.28/2,678.61
  6. Step 6: Final answer
    x = 1,096.34

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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.