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Finding the Fourth Proportional to 1,692.15, 2,535.79 and 960.18

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Solution

The fourth proportional to 1,692.15, 2,535.79 and 960.18 is: 1,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,692.15 : 2,535.79 = 960.18 : x
  2. Step 2: Convert to fraction form
    1,692.15/2,535.79 = 960.18/x
  3. Step 3: Cross multiply
    1,692.15x = 2,535.79 × 960.18
  4. Step 4: Simplify right side
    1,692.15x = 2,434,814.84
  5. Step 5: Solve for x
    x = 2,434,814.84/1,692.15
  6. Step 6: Final answer
    x = 1,438.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.