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Finding the Fourth Proportional to 6,900.78, 9,523.12 and 3,757

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Solution

The fourth proportional to 6,900.78, 9,523.12 and 3,757 is: 5,184.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,900.78 : 9,523.12 = 3,757 : x
  2. Step 2: Convert to fraction form
    6,900.78/9,523.12 = 3,757/x
  3. Step 3: Cross multiply
    6,900.78x = 9,523.12 × 3,757
  4. Step 4: Simplify right side
    6,900.78x = 35,778,361.84
  5. Step 5: Solve for x
    x = 35,778,361.84/6,900.78
  6. Step 6: Final answer
    x = 5,184.68

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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.