Home / 7,812.18-11,719.38-2,881.43

Finding the Fourth Proportional to 7,812.18, 11,719.38 and 2,881.43

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Solution

The fourth proportional to 7,812.18, 11,719.38 and 2,881.43 is: 4,322.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.18 : 11,719.38 = 2,881.43 : x
  2. Step 2: Convert to fraction form
    7,812.18/11,719.38 = 2,881.43/x
  3. Step 3: Cross multiply
    7,812.18x = 11,719.38 × 2,881.43
  4. Step 4: Simplify right side
    7,812.18x = 33,768,558.71
  5. Step 5: Solve for x
    x = 33,768,558.71/7,812.18
  6. Step 6: Final answer
    x = 4,322.56

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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.