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Finding the Fourth Proportional to 1,950.81, 2,692.11 and 1,066.61

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Solution

The fourth proportional to 1,950.81, 2,692.11 and 1,066.61 is: 1,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,950.81 : 2,692.11 = 1,066.61 : x
  2. Step 2: Convert to fraction form
    1,950.81/2,692.11 = 1,066.61/x
  3. Step 3: Cross multiply
    1,950.81x = 2,692.11 × 1,066.61
  4. Step 4: Simplify right side
    1,950.81x = 2,871,420.25
  5. Step 5: Solve for x
    x = 2,871,420.25/1,950.81
  6. Step 6: Final answer
    x = 1,471.91

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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.