Home / 3,176.49-4,383.41-1,998.21

Finding the Fourth Proportional to 3,176.49, 4,383.41 and 1,998.21

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Solution

The fourth proportional to 3,176.49, 4,383.41 and 1,998.21 is: 2,757.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,176.49 : 4,383.41 = 1,998.21 : x
  2. Step 2: Convert to fraction form
    3,176.49/4,383.41 = 1,998.21/x
  3. Step 3: Cross multiply
    3,176.49x = 4,383.41 × 1,998.21
  4. Step 4: Simplify right side
    3,176.49x = 8,758,963.71
  5. Step 5: Solve for x
    x = 8,758,963.71/3,176.49
  6. Step 6: Final answer
    x = 2,757.43

Related Problems

Find fourth proportional to 1,588.25, 2,191.70 and 999.11
Half scale
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Double scale
Find fourth proportional to 3,177.49, 4,384.78 and 1,999.21
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.