Home / 2,162.16-3,242.30-681.01

Finding the Fourth Proportional to 2,162.16, 3,242.30 and 681.01

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Solution

The fourth proportional to 2,162.16, 3,242.30 and 681.01 is: 1,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.16 : 3,242.30 = 681.01 : x
  2. Step 2: Convert to fraction form
    2,162.16/3,242.30 = 681.01/x
  3. Step 3: Cross multiply
    2,162.16x = 3,242.30 × 681.01
  4. Step 4: Simplify right side
    2,162.16x = 2,208,027.21
  5. Step 5: Solve for x
    x = 2,208,027.21/2,162.16
  6. Step 6: Final answer
    x = 1,021.21

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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.