Home / 1,979.67-2,971.33-1,860.60

Finding the Fourth Proportional to 1,979.67, 2,971.33 and 1,860.60

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Solution

The fourth proportional to 1,979.67, 2,971.33 and 1,860.60 is: 2,792.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.67 : 2,971.33 = 1,860.60 : x
  2. Step 2: Convert to fraction form
    1,979.67/2,971.33 = 1,860.60/x
  3. Step 3: Cross multiply
    1,979.67x = 2,971.33 × 1,860.60
  4. Step 4: Simplify right side
    1,979.67x = 5,528,451.95
  5. Step 5: Solve for x
    x = 5,528,451.95/1,979.67
  6. Step 6: Final answer
    x = 2,792.61

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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.