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Finding the Fourth Proportional to 3,866.54, 5,802.87 and 1,402.05

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Solution

The fourth proportional to 3,866.54, 5,802.87 and 1,402.05 is: 2,104.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.54 : 5,802.87 = 1,402.05 : x
  2. Step 2: Convert to fraction form
    3,866.54/5,802.87 = 1,402.05/x
  3. Step 3: Cross multiply
    3,866.54x = 5,802.87 × 1,402.05
  4. Step 4: Simplify right side
    3,866.54x = 8,135,940.90
  5. Step 5: Solve for x
    x = 8,135,940.90/3,866.54
  6. Step 6: Final answer
    x = 2,104.19

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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.