Home / 3,231.40-4,457.46-2,181.64

Finding the Fourth Proportional to 3,231.40, 4,457.46 and 2,181.64

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Solution

The fourth proportional to 3,231.40, 4,457.46 and 2,181.64 is: 3,009.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.40 : 4,457.46 = 2,181.64 : x
  2. Step 2: Convert to fraction form
    3,231.40/4,457.46 = 2,181.64/x
  3. Step 3: Cross multiply
    3,231.40x = 4,457.46 × 2,181.64
  4. Step 4: Simplify right side
    3,231.40x = 9,724,573.03
  5. Step 5: Solve for x
    x = 9,724,573.03/3,231.40
  6. Step 6: Final answer
    x = 3,009.40

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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.