Home / 4,085.89-5,641.40-3,190.64

Finding the Fourth Proportional to 4,085.89, 5,641.40 and 3,190.64

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Solution

The fourth proportional to 4,085.89, 5,641.40 and 3,190.64 is: 4,405.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.89 : 5,641.40 = 3,190.64 : x
  2. Step 2: Convert to fraction form
    4,085.89/5,641.40 = 3,190.64/x
  3. Step 3: Cross multiply
    4,085.89x = 5,641.40 × 3,190.64
  4. Step 4: Simplify right side
    4,085.89x = 17,999,656.27
  5. Step 5: Solve for x
    x = 17,999,656.27/4,085.89
  6. Step 6: Final answer
    x = 4,405.32

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Half scale
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Double scale
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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.