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Finding the Fourth Proportional to 6,641.68, 9,963.95 and 2,692.90

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Solution

The fourth proportional to 6,641.68, 9,963.95 and 2,692.90 is: 4,039.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.68 : 9,963.95 = 2,692.90 : x
  2. Step 2: Convert to fraction form
    6,641.68/9,963.95 = 2,692.90/x
  3. Step 3: Cross multiply
    6,641.68x = 9,963.95 × 2,692.90
  4. Step 4: Simplify right side
    6,641.68x = 26,831,920.96
  5. Step 5: Solve for x
    x = 26,831,920.96/6,641.68
  6. Step 6: Final answer
    x = 4,039.93

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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.