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Finding the Fourth Proportional to 3,866.12, 5,800.25 and 1,270.88

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Solution

The fourth proportional to 3,866.12, 5,800.25 and 1,270.88 is: 1,906.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.12 : 5,800.25 = 1,270.88 : x
  2. Step 2: Convert to fraction form
    3,866.12/5,800.25 = 1,270.88/x
  3. Step 3: Cross multiply
    3,866.12x = 5,800.25 × 1,270.88
  4. Step 4: Simplify right side
    3,866.12x = 7,371,386.36
  5. Step 5: Solve for x
    x = 7,371,386.36/3,866.12
  6. Step 6: Final answer
    x = 1,906.67

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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.