Home / 2,867.62-3,956.70-1,688.38

Finding the Fourth Proportional to 2,867.62, 3,956.70 and 1,688.38

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Solution

The fourth proportional to 2,867.62, 3,956.70 and 1,688.38 is: 2,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.62 : 3,956.70 = 1,688.38 : x
  2. Step 2: Convert to fraction form
    2,867.62/3,956.70 = 1,688.38/x
  3. Step 3: Cross multiply
    2,867.62x = 3,956.70 × 1,688.38
  4. Step 4: Simplify right side
    2,867.62x = 6,680,413.15
  5. Step 5: Solve for x
    x = 6,680,413.15/2,867.62
  6. Step 6: Final answer
    x = 2,329.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.