Home / 2,140.31-2,954.29-1,984.49

Finding the Fourth Proportional to 2,140.31, 2,954.29 and 1,984.49

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Solution

The fourth proportional to 2,140.31, 2,954.29 and 1,984.49 is: 2,739.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.31 : 2,954.29 = 1,984.49 : x
  2. Step 2: Convert to fraction form
    2,140.31/2,954.29 = 1,984.49/x
  3. Step 3: Cross multiply
    2,140.31x = 2,954.29 × 1,984.49
  4. Step 4: Simplify right side
    2,140.31x = 5,862,758.96
  5. Step 5: Solve for x
    x = 5,862,758.96/2,140.31
  6. Step 6: Final answer
    x = 2,739.21

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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.