Home / 1,968.40-2,716.07-1,129.04

Finding the Fourth Proportional to 1,968.40, 2,716.07 and 1,129.04

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Solution

The fourth proportional to 1,968.40, 2,716.07 and 1,129.04 is: 1,557.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.40 : 2,716.07 = 1,129.04 : x
  2. Step 2: Convert to fraction form
    1,968.40/2,716.07 = 1,129.04/x
  3. Step 3: Cross multiply
    1,968.40x = 2,716.07 × 1,129.04
  4. Step 4: Simplify right side
    1,968.40x = 3,066,542.63
  5. Step 5: Solve for x
    x = 3,066,542.63/1,968.40
  6. Step 6: Final answer
    x = 1,557.88

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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.