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Finding the Fourth Proportional to 6,640.97, 9,961.43 and 2,692.17

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Solution

The fourth proportional to 6,640.97, 9,961.43 and 2,692.17 is: 4,038.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.97 : 9,961.43 = 2,692.17 : x
  2. Step 2: Convert to fraction form
    6,640.97/9,961.43 = 2,692.17/x
  3. Step 3: Cross multiply
    6,640.97x = 9,961.43 × 2,692.17
  4. Step 4: Simplify right side
    6,640.97x = 26,817,868.22
  5. Step 5: Solve for x
    x = 26,817,868.22/6,640.97
  6. Step 6: Final answer
    x = 4,038.24

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1.5x scale

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.