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Finding the Fourth Proportional to 1,999.77, 2,757.00 and 1,662.38

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Solution

The fourth proportional to 1,999.77, 2,757.00 and 1,662.38 is: 2,291.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.77 : 2,757.00 = 1,662.38 : x
  2. Step 2: Convert to fraction form
    1,999.77/2,757.00 = 1,662.38/x
  3. Step 3: Cross multiply
    1,999.77x = 2,757.00 × 1,662.38
  4. Step 4: Simplify right side
    1,999.77x = 4,583,184.45
  5. Step 5: Solve for x
    x = 4,583,184.45/1,999.77
  6. Step 6: Final answer
    x = 2,291.85

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1.5x scale

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.