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Finding the Fourth Proportional to 1,988.44, 2,737.48 and 1,692

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Solution

The fourth proportional to 1,988.44, 2,737.48 and 1,692 is: 2,329.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.44 : 2,737.48 = 1,692 : x
  2. Step 2: Convert to fraction form
    1,988.44/2,737.48 = 1,692/x
  3. Step 3: Cross multiply
    1,988.44x = 2,737.48 × 1,692
  4. Step 4: Simplify right side
    1,988.44x = 4,631,816.16
  5. Step 5: Solve for x
    x = 4,631,816.16/1,988.44
  6. Step 6: Final answer
    x = 2,329.37

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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.