Home / 7,918.81-11,880.21-2,372.13

Finding the Fourth Proportional to 7,918.81, 11,880.21 and 2,372.13

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Solution

The fourth proportional to 7,918.81, 11,880.21 and 2,372.13 is: 3,558.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.81 : 11,880.21 = 2,372.13 : x
  2. Step 2: Convert to fraction form
    7,918.81/11,880.21 = 2,372.13/x
  3. Step 3: Cross multiply
    7,918.81x = 11,880.21 × 2,372.13
  4. Step 4: Simplify right side
    7,918.81x = 28,181,402.55
  5. Step 5: Solve for x
    x = 28,181,402.55/7,918.81
  6. Step 6: Final answer
    x = 3,558.79

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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.