Home / 1,969.42-2,717.70-1,085.06

Finding the Fourth Proportional to 1,969.42, 2,717.70 and 1,085.06

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Solution

The fourth proportional to 1,969.42, 2,717.70 and 1,085.06 is: 1,497.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,969.42 : 2,717.70 = 1,085.06 : x
  2. Step 2: Convert to fraction form
    1,969.42/2,717.70 = 1,085.06/x
  3. Step 3: Cross multiply
    1,969.42x = 2,717.70 × 1,085.06
  4. Step 4: Simplify right side
    1,969.42x = 2,948,867.56
  5. Step 5: Solve for x
    x = 2,948,867.56/1,969.42
  6. Step 6: Final answer
    x = 1,497.33

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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.