Home / 1,413.36-1,951.56-1,021.68

Finding the Fourth Proportional to 1,413.36, 1,951.56 and 1,021.68

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Solution

The fourth proportional to 1,413.36, 1,951.56 and 1,021.68 is: 1,410.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.36 : 1,951.56 = 1,021.68 : x
  2. Step 2: Convert to fraction form
    1,413.36/1,951.56 = 1,021.68/x
  3. Step 3: Cross multiply
    1,413.36x = 1,951.56 × 1,021.68
  4. Step 4: Simplify right side
    1,413.36x = 1,993,869.82
  5. Step 5: Solve for x
    x = 1,993,869.82/1,413.36
  6. Step 6: Final answer
    x = 1,410.73

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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.