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Finding the Fourth Proportional to 9,489, 13,095.24 and 5,297.28

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Solution

The fourth proportional to 9,489, 13,095.24 and 5,297.28 is: 7,310.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,489 : 13,095.24 = 5,297.28 : x
  2. Step 2: Convert to fraction form
    9,489/13,095.24 = 5,297.28/x
  3. Step 3: Cross multiply
    9,489x = 13,095.24 × 5,297.28
  4. Step 4: Simplify right side
    9,489x = 69,369,152.95
  5. Step 5: Solve for x
    x = 69,369,152.95/9,489
  6. Step 6: Final answer
    x = 7,310.48

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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.