Home / 3,085.12-4,255.52-2,693.12

Finding the Fourth Proportional to 3,085.12, 4,255.52 and 2,693.12

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Solution

The fourth proportional to 3,085.12, 4,255.52 and 2,693.12 is: 3,714.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.12 : 4,255.52 = 2,693.12 : x
  2. Step 2: Convert to fraction form
    3,085.12/4,255.52 = 2,693.12/x
  3. Step 3: Cross multiply
    3,085.12x = 4,255.52 × 2,693.12
  4. Step 4: Simplify right side
    3,085.12x = 11,460,626.02
  5. Step 5: Solve for x
    x = 11,460,626.02/3,085.12
  6. Step 6: Final answer
    x = 3,714.81

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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.