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Finding the Fourth Proportional to 3,657.93, 5,486.94 and 1,812.93

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Solution

The fourth proportional to 3,657.93, 5,486.94 and 1,812.93 is: 2,719.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.93 : 5,486.94 = 1,812.93 : x
  2. Step 2: Convert to fraction form
    3,657.93/5,486.94 = 1,812.93/x
  3. Step 3: Cross multiply
    3,657.93x = 5,486.94 × 1,812.93
  4. Step 4: Simplify right side
    3,657.93x = 9,947,438.13
  5. Step 5: Solve for x
    x = 9,947,438.13/3,657.93
  6. Step 6: Final answer
    x = 2,719.42

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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.