Home / 7,111.14-9,812.79-3,967.26

Finding the Fourth Proportional to 7,111.14, 9,812.79 and 3,967.26

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Solution

The fourth proportional to 7,111.14, 9,812.79 and 3,967.26 is: 5,474.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,111.14 : 9,812.79 = 3,967.26 : x
  2. Step 2: Convert to fraction form
    7,111.14/9,812.79 = 3,967.26/x
  3. Step 3: Cross multiply
    7,111.14x = 9,812.79 × 3,967.26
  4. Step 4: Simplify right side
    7,111.14x = 38,929,889.26
  5. Step 5: Solve for x
    x = 38,929,889.26/7,111.14
  6. Step 6: Final answer
    x = 5,474.49

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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.