Home / 3,756.90-5,631.16-1,905.38

Finding the Fourth Proportional to 3,756.90, 5,631.16 and 1,905.38

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Solution

The fourth proportional to 3,756.90, 5,631.16 and 1,905.38 is: 2,855.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,756.90 : 5,631.16 = 1,905.38 : x
  2. Step 2: Convert to fraction form
    3,756.90/5,631.16 = 1,905.38/x
  3. Step 3: Cross multiply
    3,756.90x = 5,631.16 × 1,905.38
  4. Step 4: Simplify right side
    3,756.90x = 10,729,499.64
  5. Step 5: Solve for x
    x = 10,729,499.64/3,756.90
  6. Step 6: Final answer
    x = 2,855.94

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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.