Home / 1,968.12-2,955.69-1,811.64

Finding the Fourth Proportional to 1,968.12, 2,955.69 and 1,811.64

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Solution

The fourth proportional to 1,968.12, 2,955.69 and 1,811.64 is: 2,720.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.12 : 2,955.69 = 1,811.64 : x
  2. Step 2: Convert to fraction form
    1,968.12/2,955.69 = 1,811.64/x
  3. Step 3: Cross multiply
    1,968.12x = 2,955.69 × 1,811.64
  4. Step 4: Simplify right side
    1,968.12x = 5,354,646.23
  5. Step 5: Solve for x
    x = 5,354,646.23/1,968.12
  6. Step 6: Final answer
    x = 2,720.69

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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.