Home / 9,120.93-13,686.67-3,855.60

Finding the Fourth Proportional to 9,120.93, 13,686.67 and 3,855.60

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Solution

The fourth proportional to 9,120.93, 13,686.67 and 3,855.60 is: 5,785.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.93 : 13,686.67 = 3,855.60 : x
  2. Step 2: Convert to fraction form
    9,120.93/13,686.67 = 3,855.60/x
  3. Step 3: Cross multiply
    9,120.93x = 13,686.67 × 3,855.60
  4. Step 4: Simplify right side
    9,120.93x = 52,770,315.24
  5. Step 5: Solve for x
    x = 52,770,315.24/9,120.93
  6. Step 6: Final answer
    x = 5,785.63

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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.