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Finding the Fourth Proportional to 7,915.94, 10,924.01 and 4,379.39

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Solution

The fourth proportional to 7,915.94, 10,924.01 and 4,379.39 is: 6,043.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,915.94 : 10,924.01 = 4,379.39 : x
  2. Step 2: Convert to fraction form
    7,915.94/10,924.01 = 4,379.39/x
  3. Step 3: Cross multiply
    7,915.94x = 10,924.01 × 4,379.39
  4. Step 4: Simplify right side
    7,915.94x = 47,840,478.26
  5. Step 5: Solve for x
    x = 47,840,478.26/7,915.94
  6. Step 6: Final answer
    x = 6,043.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.