Home / 3,231.16-4,457.66-1,971.22

Finding the Fourth Proportional to 3,231.16, 4,457.66 and 1,971.22

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Solution

The fourth proportional to 3,231.16, 4,457.66 and 1,971.22 is: 2,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.16 : 4,457.66 = 1,971.22 : x
  2. Step 2: Convert to fraction form
    3,231.16/4,457.66 = 1,971.22/x
  3. Step 3: Cross multiply
    3,231.16x = 4,457.66 × 1,971.22
  4. Step 4: Simplify right side
    3,231.16x = 8,787,028.55
  5. Step 5: Solve for x
    x = 8,787,028.55/3,231.16
  6. Step 6: Final answer
    x = 2,719.47

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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.