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Finding the Fourth Proportional to 7,902.90, 11,850.84 and 2,905.29

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Solution

The fourth proportional to 7,902.90, 11,850.84 and 2,905.29 is: 4,356.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,902.90 : 11,850.84 = 2,905.29 : x
  2. Step 2: Convert to fraction form
    7,902.90/11,850.84 = 2,905.29/x
  3. Step 3: Cross multiply
    7,902.90x = 11,850.84 × 2,905.29
  4. Step 4: Simplify right side
    7,902.90x = 34,430,126.94
  5. Step 5: Solve for x
    x = 34,430,126.94/7,902.90
  6. Step 6: Final answer
    x = 4,356.64

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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.