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Finding the Fourth Proportional to 3,786.19, 5,224.94 and 2,130.19

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Solution

The fourth proportional to 3,786.19, 5,224.94 and 2,130.19 is: 2,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.19 : 5,224.94 = 2,130.19 : x
  2. Step 2: Convert to fraction form
    3,786.19/5,224.94 = 2,130.19/x
  3. Step 3: Cross multiply
    3,786.19x = 5,224.94 × 2,130.19
  4. Step 4: Simplify right side
    3,786.19x = 11,130,114.94
  5. Step 5: Solve for x
    x = 11,130,114.94/3,786.19
  6. Step 6: Final answer
    x = 2,939.66

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Half scale
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Double scale
Find fourth proportional to 3,787.19, 5,226.32 and 2,131.19
Similar ratio
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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.