Home / 3,191.34-4,406.19-1,998.15

Finding the Fourth Proportional to 3,191.34, 4,406.19 and 1,998.15

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Solution

The fourth proportional to 3,191.34, 4,406.19 and 1,998.15 is: 2,758.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.34 : 4,406.19 = 1,998.15 : x
  2. Step 2: Convert to fraction form
    3,191.34/4,406.19 = 1,998.15/x
  3. Step 3: Cross multiply
    3,191.34x = 4,406.19 × 1,998.15
  4. Step 4: Simplify right side
    3,191.34x = 8,804,228.55
  5. Step 5: Solve for x
    x = 8,804,228.55/3,191.34
  6. Step 6: Final answer
    x = 2,758.79

Related Problems

Find fourth proportional to 1,595.67, 2,203.10 and 999.08
Half scale
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Double scale
Find fourth proportional to 3,192.34, 4,407.57 and 1,999.15
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.