Home / 3,085.98-4,629.51-1,138.20

Finding the Fourth Proportional to 3,085.98, 4,629.51 and 1,138.20

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Solution

The fourth proportional to 3,085.98, 4,629.51 and 1,138.20 is: 1,707.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.98 : 4,629.51 = 1,138.20 : x
  2. Step 2: Convert to fraction form
    3,085.98/4,629.51 = 1,138.20/x
  3. Step 3: Cross multiply
    3,085.98x = 4,629.51 × 1,138.20
  4. Step 4: Simplify right side
    3,085.98x = 5,269,308.28
  5. Step 5: Solve for x
    x = 5,269,308.28/3,085.98
  6. Step 6: Final answer
    x = 1,707.50

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Double scale
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Similar ratio
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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.