Home / 3,181.48-4,390.46-1,856.10

Finding the Fourth Proportional to 3,181.48, 4,390.46 and 1,856.10

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Solution

The fourth proportional to 3,181.48, 4,390.46 and 1,856.10 is: 2,561.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.48 : 4,390.46 = 1,856.10 : x
  2. Step 2: Convert to fraction form
    3,181.48/4,390.46 = 1,856.10/x
  3. Step 3: Cross multiply
    3,181.48x = 4,390.46 × 1,856.10
  4. Step 4: Simplify right side
    3,181.48x = 8,149,132.81
  5. Step 5: Solve for x
    x = 8,149,132.81/3,181.48
  6. Step 6: Final answer
    x = 2,561.43

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Double scale
Find fourth proportional to 3,182.48, 4,391.84 and 1,857.10
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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.