Home / 9,159.78-13,739.52-2,919.71

Finding the Fourth Proportional to 9,159.78, 13,739.52 and 2,919.71

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Solution

The fourth proportional to 9,159.78, 13,739.52 and 2,919.71 is: 4,379.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,159.78 : 13,739.52 = 2,919.71 : x
  2. Step 2: Convert to fraction form
    9,159.78/13,739.52 = 2,919.71/x
  3. Step 3: Cross multiply
    9,159.78x = 13,739.52 × 2,919.71
  4. Step 4: Simplify right side
    9,159.78x = 40,115,413.94
  5. Step 5: Solve for x
    x = 40,115,413.94/9,159.78
  6. Step 6: Final answer
    x = 4,379.52

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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.