Home / 1,969.55-2,717.86-1,085.36

Finding the Fourth Proportional to 1,969.55, 2,717.86 and 1,085.36

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Solution

The fourth proportional to 1,969.55, 2,717.86 and 1,085.36 is: 1,497.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.55 : 2,717.86 = 1,085.36 : x
  2. Step 2: Convert to fraction form
    1,969.55/2,717.86 = 1,085.36/x
  3. Step 3: Cross multiply
    1,969.55x = 2,717.86 × 1,085.36
  4. Step 4: Simplify right side
    1,969.55x = 2,949,844.94
  5. Step 5: Solve for x
    x = 2,949,844.94/1,969.55
  6. Step 6: Final answer
    x = 1,497.72

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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.