Home / 2,712.40-4,068.60-1,413.70

Finding the Fourth Proportional to 2,712.40, 4,068.60 and 1,413.70

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Solution

The fourth proportional to 2,712.40, 4,068.60 and 1,413.70 is: 2,120.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.40 : 4,068.60 = 1,413.70 : x
  2. Step 2: Convert to fraction form
    2,712.40/4,068.60 = 1,413.70/x
  3. Step 3: Cross multiply
    2,712.40x = 4,068.60 × 1,413.70
  4. Step 4: Simplify right side
    2,712.40x = 5,751,779.82
  5. Step 5: Solve for x
    x = 5,751,779.82/2,712.40
  6. Step 6: Final answer
    x = 2,120.55

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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.