Home / 5,081.36-7,012.01-2,812.57

Finding the Fourth Proportional to 5,081.36, 7,012.01 and 2,812.57

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Solution

The fourth proportional to 5,081.36, 7,012.01 and 2,812.57 is: 3,881.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.36 : 7,012.01 = 2,812.57 : x
  2. Step 2: Convert to fraction form
    5,081.36/7,012.01 = 2,812.57/x
  3. Step 3: Cross multiply
    5,081.36x = 7,012.01 × 2,812.57
  4. Step 4: Simplify right side
    5,081.36x = 19,721,795.93
  5. Step 5: Solve for x
    x = 19,721,795.93/5,081.36
  6. Step 6: Final answer
    x = 3,881.21

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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.