Home / 3,085.95-4,258.69-1,759.78

Finding the Fourth Proportional to 3,085.95, 4,258.69 and 1,759.78

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Solution

The fourth proportional to 3,085.95, 4,258.69 and 1,759.78 is: 2,428.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.95 : 4,258.69 = 1,759.78 : x
  2. Step 2: Convert to fraction form
    3,085.95/4,258.69 = 1,759.78/x
  3. Step 3: Cross multiply
    3,085.95x = 4,258.69 × 1,759.78
  4. Step 4: Simplify right side
    3,085.95x = 7,494,357.49
  5. Step 5: Solve for x
    x = 7,494,357.49/3,085.95
  6. Step 6: Final answer
    x = 2,428.54

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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.