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Finding the Fourth Proportional to 7,317.95, 10,976.90 and 2,938.48

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Solution

The fourth proportional to 7,317.95, 10,976.90 and 2,938.48 is: 4,407.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,317.95 : 10,976.90 = 2,938.48 : x
  2. Step 2: Convert to fraction form
    7,317.95/10,976.90 = 2,938.48/x
  3. Step 3: Cross multiply
    7,317.95x = 10,976.90 × 2,938.48
  4. Step 4: Simplify right side
    7,317.95x = 32,255,358.98
  5. Step 5: Solve for x
    x = 32,255,358.98/7,317.95
  6. Step 6: Final answer
    x = 4,407.71

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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.