Home / 5,457-8,186.49-2,170.11

Finding the Fourth Proportional to 5,457, 8,186.49 and 2,170.11

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Solution

The fourth proportional to 5,457, 8,186.49 and 2,170.11 is: 3,255.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,457 : 8,186.49 = 2,170.11 : x
  2. Step 2: Convert to fraction form
    5,457/8,186.49 = 2,170.11/x
  3. Step 3: Cross multiply
    5,457x = 8,186.49 × 2,170.11
  4. Step 4: Simplify right side
    5,457x = 17,765,583.81
  5. Step 5: Solve for x
    x = 17,765,583.81/5,457
  6. Step 6: Final answer
    x = 3,255.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.