Home / 1,413.30-2,119.98-1,206.56

Finding the Fourth Proportional to 1,413.30, 2,119.98 and 1,206.56

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Solution

The fourth proportional to 1,413.30, 2,119.98 and 1,206.56 is: 1,809.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.30 : 2,119.98 = 1,206.56 : x
  2. Step 2: Convert to fraction form
    1,413.30/2,119.98 = 1,206.56/x
  3. Step 3: Cross multiply
    1,413.30x = 2,119.98 × 1,206.56
  4. Step 4: Simplify right side
    1,413.30x = 2,557,883.07
  5. Step 5: Solve for x
    x = 2,557,883.07/1,413.30
  6. Step 6: Final answer
    x = 1,809.87

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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.