Home / 1,986.43-2,740.08-1,314.25

Finding the Fourth Proportional to 1,986.43, 2,740.08 and 1,314.25

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Solution

The fourth proportional to 1,986.43, 2,740.08 and 1,314.25 is: 1,812.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.43 : 2,740.08 = 1,314.25 : x
  2. Step 2: Convert to fraction form
    1,986.43/2,740.08 = 1,314.25/x
  3. Step 3: Cross multiply
    1,986.43x = 2,740.08 × 1,314.25
  4. Step 4: Simplify right side
    1,986.43x = 3,601,140.83
  5. Step 5: Solve for x
    x = 3,601,140.83/1,986.43
  6. Step 6: Final answer
    x = 1,812.87

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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.