Home / 1,968.09-2,715.49-1,181.98

Finding the Fourth Proportional to 1,968.09, 2,715.49 and 1,181.98

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Solution

The fourth proportional to 1,968.09, 2,715.49 and 1,181.98 is: 1,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.09 : 2,715.49 = 1,181.98 : x
  2. Step 2: Convert to fraction form
    1,968.09/2,715.49 = 1,181.98/x
  3. Step 3: Cross multiply
    1,968.09x = 2,715.49 × 1,181.98
  4. Step 4: Simplify right side
    1,968.09x = 3,209,654.87
  5. Step 5: Solve for x
    x = 3,209,654.87/1,968.09
  6. Step 6: Final answer
    x = 1,630.85

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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.