Home / 9,140.75-13,716.08-3,878.72

Finding the Fourth Proportional to 9,140.75, 13,716.08 and 3,878.72

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Solution

The fourth proportional to 9,140.75, 13,716.08 and 3,878.72 is: 5,820.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,140.75 : 13,716.08 = 3,878.72 : x
  2. Step 2: Convert to fraction form
    9,140.75/13,716.08 = 3,878.72/x
  3. Step 3: Cross multiply
    9,140.75x = 13,716.08 × 3,878.72
  4. Step 4: Simplify right side
    9,140.75x = 53,200,745.84
  5. Step 5: Solve for x
    x = 53,200,745.84/9,140.75
  6. Step 6: Final answer
    x = 5,820.18

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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.