Home / 5,685.78-7,846.38-3,168.12

Finding the Fourth Proportional to 5,685.78, 7,846.38 and 3,168.12

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Solution

The fourth proportional to 5,685.78, 7,846.38 and 3,168.12 is: 4,372.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.78 : 7,846.38 = 3,168.12 : x
  2. Step 2: Convert to fraction form
    5,685.78/7,846.38 = 3,168.12/x
  3. Step 3: Cross multiply
    5,685.78x = 7,846.38 × 3,168.12
  4. Step 4: Simplify right side
    5,685.78x = 24,858,273.41
  5. Step 5: Solve for x
    x = 24,858,273.41/5,685.78
  6. Step 6: Final answer
    x = 4,372.01

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Find fourth proportional to 2,842.89, 3,923.19 and 1,584.06
Half scale
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Double scale
Find fourth proportional to 5,686.78, 7,847.76 and 3,169.12
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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.