Home / 1,413.32-2,119.98-1,380.92

Finding the Fourth Proportional to 1,413.32, 2,119.98 and 1,380.92

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Solution

The fourth proportional to 1,413.32, 2,119.98 and 1,380.92 is: 2,071.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.32 : 2,119.98 = 1,380.92 : x
  2. Step 2: Convert to fraction form
    1,413.32/2,119.98 = 1,380.92/x
  3. Step 3: Cross multiply
    1,413.32x = 2,119.98 × 1,380.92
  4. Step 4: Simplify right side
    1,413.32x = 2,927,522.78
  5. Step 5: Solve for x
    x = 2,927,522.78/1,413.32
  6. Step 6: Final answer
    x = 2,071.38

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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.