Home / 1,413.07-2,117.31-863.58

Finding the Fourth Proportional to 1,413.07, 2,117.31 and 863.58

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Solution

The fourth proportional to 1,413.07, 2,117.31 and 863.58 is: 1,293.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.07 : 2,117.31 = 863.58 : x
  2. Step 2: Convert to fraction form
    1,413.07/2,117.31 = 863.58/x
  3. Step 3: Cross multiply
    1,413.07x = 2,117.31 × 863.58
  4. Step 4: Simplify right side
    1,413.07x = 1,828,466.57
  5. Step 5: Solve for x
    x = 1,828,466.57/1,413.07
  6. Step 6: Final answer
    x = 1,293.97

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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.