Home / 7,111.14-9,812.70-3,967.54

Finding the Fourth Proportional to 7,111.14, 9,812.70 and 3,967.54

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Solution

The fourth proportional to 7,111.14, 9,812.70 and 3,967.54 is: 5,474.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.14 : 9,812.70 = 3,967.54 : x
  2. Step 2: Convert to fraction form
    7,111.14/9,812.70 = 3,967.54/x
  3. Step 3: Cross multiply
    7,111.14x = 9,812.70 × 3,967.54
  4. Step 4: Simplify right side
    7,111.14x = 38,932,279.76
  5. Step 5: Solve for x
    x = 38,932,279.76/7,111.14
  6. Step 6: Final answer
    x = 5,474.83

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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.