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Finding the Fourth Proportional to 5,296, 7,308.40 and 2,938.16

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Solution

The fourth proportional to 5,296, 7,308.40 and 2,938.16 is: 4,054.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,296 : 7,308.40 = 2,938.16 : x
  2. Step 2: Convert to fraction form
    5,296/7,308.40 = 2,938.16/x
  3. Step 3: Cross multiply
    5,296x = 7,308.40 × 2,938.16
  4. Step 4: Simplify right side
    5,296x = 21,473,248.54
  5. Step 5: Solve for x
    x = 21,473,248.54/5,296
  6. Step 6: Final answer
    x = 4,054.62

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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.