Home / 1,969.39-2,717.55-1,085.14

Finding the Fourth Proportional to 1,969.39, 2,717.55 and 1,085.14

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Solution

The fourth proportional to 1,969.39, 2,717.55 and 1,085.14 is: 1,497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.39 : 2,717.55 = 1,085.14 : x
  2. Step 2: Convert to fraction form
    1,969.39/2,717.55 = 1,085.14/x
  3. Step 3: Cross multiply
    1,969.39x = 2,717.55 × 1,085.14
  4. Step 4: Simplify right side
    1,969.39x = 2,948,922.21
  5. Step 5: Solve for x
    x = 2,948,922.21/1,969.39
  6. Step 6: Final answer
    x = 1,497.38

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1.5x scale

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.