Home / 3,181.98-4,391.19-1,856.10

Finding the Fourth Proportional to 3,181.98, 4,391.19 and 1,856.10

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Solution

The fourth proportional to 3,181.98, 4,391.19 and 1,856.10 is: 2,561.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.98 : 4,391.19 = 1,856.10 : x
  2. Step 2: Convert to fraction form
    3,181.98/4,391.19 = 1,856.10/x
  3. Step 3: Cross multiply
    3,181.98x = 4,391.19 × 1,856.10
  4. Step 4: Simplify right side
    3,181.98x = 8,150,487.76
  5. Step 5: Solve for x
    x = 8,150,487.76/3,181.98
  6. Step 6: Final answer
    x = 2,561.45

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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.