Home / 3,170.19-4,374.89-1,911.31

Finding the Fourth Proportional to 3,170.19, 4,374.89 and 1,911.31

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Solution

The fourth proportional to 3,170.19, 4,374.89 and 1,911.31 is: 2,637.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.19 : 4,374.89 = 1,911.31 : x
  2. Step 2: Convert to fraction form
    3,170.19/4,374.89 = 1,911.31/x
  3. Step 3: Cross multiply
    3,170.19x = 4,374.89 × 1,911.31
  4. Step 4: Simplify right side
    3,170.19x = 8,361,771.01
  5. Step 5: Solve for x
    x = 8,361,771.01/3,170.19
  6. Step 6: Final answer
    x = 2,637.62

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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.