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Finding the Fourth Proportional to 7,318.98, 10,978.92 and 2,935.87

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Solution

The fourth proportional to 7,318.98, 10,978.92 and 2,935.87 is: 4,403.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.98 : 10,978.92 = 2,935.87 : x
  2. Step 2: Convert to fraction form
    7,318.98/10,978.92 = 2,935.87/x
  3. Step 3: Cross multiply
    7,318.98x = 10,978.92 × 2,935.87
  4. Step 4: Simplify right side
    7,318.98x = 32,232,654.41
  5. Step 5: Solve for x
    x = 32,232,654.41/7,318.98
  6. Step 6: Final answer
    x = 4,403.98

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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.