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Finding the Fourth Proportional to 3,751.40, 5,627.79 and 1,878.27

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Solution

The fourth proportional to 3,751.40, 5,627.79 and 1,878.27 is: 2,817.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751.40 : 5,627.79 = 1,878.27 : x
  2. Step 2: Convert to fraction form
    3,751.40/5,627.79 = 1,878.27/x
  3. Step 3: Cross multiply
    3,751.40x = 5,627.79 × 1,878.27
  4. Step 4: Simplify right side
    3,751.40x = 10,570,509.12
  5. Step 5: Solve for x
    x = 10,570,509.12/3,751.40
  6. Step 6: Final answer
    x = 2,817.75

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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.