Home / 7,318.45-10,979.72-2,938.98

Finding the Fourth Proportional to 7,318.45, 10,979.72 and 2,938.98

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Solution

The fourth proportional to 7,318.45, 10,979.72 and 2,938.98 is: 4,409.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.45 : 10,979.72 = 2,938.98 : x
  2. Step 2: Convert to fraction form
    7,318.45/10,979.72 = 2,938.98/x
  3. Step 3: Cross multiply
    7,318.45x = 10,979.72 × 2,938.98
  4. Step 4: Simplify right side
    7,318.45x = 32,269,184.83
  5. Step 5: Solve for x
    x = 32,269,184.83/7,318.45
  6. Step 6: Final answer
    x = 4,409.29

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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.