Home / 1,969.76-2,950.66-1,189.32

Finding the Fourth Proportional to 1,969.76, 2,950.66 and 1,189.32

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Solution

The fourth proportional to 1,969.76, 2,950.66 and 1,189.32 is: 1,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.76 : 2,950.66 = 1,189.32 : x
  2. Step 2: Convert to fraction form
    1,969.76/2,950.66 = 1,189.32/x
  3. Step 3: Cross multiply
    1,969.76x = 2,950.66 × 1,189.32
  4. Step 4: Simplify right side
    1,969.76x = 3,509,278.95
  5. Step 5: Solve for x
    x = 3,509,278.95/1,969.76
  6. Step 6: Final answer
    x = 1,781.58

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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.