Home / 1,986.29-2,971.18-1,805.86

Finding the Fourth Proportional to 1,986.29, 2,971.18 and 1,805.86

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Solution

The fourth proportional to 1,986.29, 2,971.18 and 1,805.86 is: 2,701.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.29 : 2,971.18 = 1,805.86 : x
  2. Step 2: Convert to fraction form
    1,986.29/2,971.18 = 1,805.86/x
  3. Step 3: Cross multiply
    1,986.29x = 2,971.18 × 1,805.86
  4. Step 4: Simplify right side
    1,986.29x = 5,365,541.09
  5. Step 5: Solve for x
    x = 5,365,541.09/1,986.29
  6. Step 6: Final answer
    x = 2,701.29

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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.