Home / 2,815.75-4,224.84-1,085.59

Finding the Fourth Proportional to 2,815.75, 4,224.84 and 1,085.59

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Solution

The fourth proportional to 2,815.75, 4,224.84 and 1,085.59 is: 1,628.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.75 : 4,224.84 = 1,085.59 : x
  2. Step 2: Convert to fraction form
    2,815.75/4,224.84 = 1,085.59/x
  3. Step 3: Cross multiply
    2,815.75x = 4,224.84 × 1,085.59
  4. Step 4: Simplify right side
    2,815.75x = 4,586,444.06
  5. Step 5: Solve for x
    x = 4,586,444.06/2,815.75
  6. Step 6: Final answer
    x = 1,628.85

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1.5x scale

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.