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Finding the Fourth Proportional to 7,048.38, 9,726.83 and 3,904.63

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Solution

The fourth proportional to 7,048.38, 9,726.83 and 3,904.63 is: 5,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.38 : 9,726.83 = 3,904.63 : x
  2. Step 2: Convert to fraction form
    7,048.38/9,726.83 = 3,904.63/x
  3. Step 3: Cross multiply
    7,048.38x = 9,726.83 × 3,904.63
  4. Step 4: Simplify right side
    7,048.38x = 37,979,672.22
  5. Step 5: Solve for x
    x = 37,979,672.22/7,048.38
  6. Step 6: Final answer
    x = 5,388.43

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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.