Home / 3,147.09-4,343.27-1,821.03

Finding the Fourth Proportional to 3,147.09, 4,343.27 and 1,821.03

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Solution

The fourth proportional to 3,147.09, 4,343.27 and 1,821.03 is: 2,513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,147.09 : 4,343.27 = 1,821.03 : x
  2. Step 2: Convert to fraction form
    3,147.09/4,343.27 = 1,821.03/x
  3. Step 3: Cross multiply
    3,147.09x = 4,343.27 × 1,821.03
  4. Step 4: Simplify right side
    3,147.09x = 7,909,224.97
  5. Step 5: Solve for x
    x = 7,909,224.97/3,147.09
  6. Step 6: Final answer
    x = 2,513.19

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1.5x scale

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.