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Finding the Fourth Proportional to 2,706.78, 3,735.28 and 1,587.70

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Solution

The fourth proportional to 2,706.78, 3,735.28 and 1,587.70 is: 2,190.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,706.78 : 3,735.28 = 1,587.70 : x
  2. Step 2: Convert to fraction form
    2,706.78/3,735.28 = 1,587.70/x
  3. Step 3: Cross multiply
    2,706.78x = 3,735.28 × 1,587.70
  4. Step 4: Simplify right side
    2,706.78x = 5,930,504.06
  5. Step 5: Solve for x
    x = 5,930,504.06/2,706.78
  6. Step 6: Final answer
    x = 2,190.98

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Why These Related Problems?

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