Home / 1,413.33-1,933.08-1,390.65

Finding the Fourth Proportional to 1,413.33, 1,933.08 and 1,390.65

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Solution

The fourth proportional to 1,413.33, 1,933.08 and 1,390.65 is: 1,902.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.33 : 1,933.08 = 1,390.65 : x
  2. Step 2: Convert to fraction form
    1,413.33/1,933.08 = 1,390.65/x
  3. Step 3: Cross multiply
    1,413.33x = 1,933.08 × 1,390.65
  4. Step 4: Simplify right side
    1,413.33x = 2,688,237.70
  5. Step 5: Solve for x
    x = 2,688,237.70/1,413.33
  6. Step 6: Final answer
    x = 1,902.06

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.