Home / 3,085.76-4,255.82-1,907.12

Finding the Fourth Proportional to 3,085.76, 4,255.82 and 1,907.12

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Solution

The fourth proportional to 3,085.76, 4,255.82 and 1,907.12 is: 2,630.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.76 : 4,255.82 = 1,907.12 : x
  2. Step 2: Convert to fraction form
    3,085.76/4,255.82 = 1,907.12/x
  3. Step 3: Cross multiply
    3,085.76x = 4,255.82 × 1,907.12
  4. Step 4: Simplify right side
    3,085.76x = 8,116,359.44
  5. Step 5: Solve for x
    x = 8,116,359.44/3,085.76
  6. Step 6: Final answer
    x = 2,630.26

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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.