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Finding the Fourth Proportional to 3,675.76, 5,072.50 and 1,997.16

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Solution

The fourth proportional to 3,675.76, 5,072.50 and 1,997.16 is: 2,756.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,675.76 : 5,072.50 = 1,997.16 : x
  2. Step 2: Convert to fraction form
    3,675.76/5,072.50 = 1,997.16/x
  3. Step 3: Cross multiply
    3,675.76x = 5,072.50 × 1,997.16
  4. Step 4: Simplify right side
    3,675.76x = 10,130,594.10
  5. Step 5: Solve for x
    x = 10,130,594.10/3,675.76
  6. Step 6: Final answer
    x = 2,756.05

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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.