Home / 7,928.96-11,889.99-4,230.36

Finding the Fourth Proportional to 7,928.96, 11,889.99 and 4,230.36

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Solution

The fourth proportional to 7,928.96, 11,889.99 and 4,230.36 is: 6,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.96 : 11,889.99 = 4,230.36 : x
  2. Step 2: Convert to fraction form
    7,928.96/11,889.99 = 4,230.36/x
  3. Step 3: Cross multiply
    7,928.96x = 11,889.99 × 4,230.36
  4. Step 4: Simplify right side
    7,928.96x = 50,298,938.10
  5. Step 5: Solve for x
    x = 50,298,938.10/7,928.96
  6. Step 6: Final answer
    x = 6,343.70

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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.