Home / 2,992.40-4,128.32-1,749.68

Finding the Fourth Proportional to 2,992.40, 4,128.32 and 1,749.68

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Solution

The fourth proportional to 2,992.40, 4,128.32 and 1,749.68 is: 2,413.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,992.40 : 4,128.32 = 1,749.68 : x
  2. Step 2: Convert to fraction form
    2,992.40/4,128.32 = 1,749.68/x
  3. Step 3: Cross multiply
    2,992.40x = 4,128.32 × 1,749.68
  4. Step 4: Simplify right side
    2,992.40x = 7,223,238.94
  5. Step 5: Solve for x
    x = 7,223,238.94/2,992.40
  6. Step 6: Final answer
    x = 2,413.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.