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Finding the Fourth Proportional to 9,300.78, 13,953.12 and 2,726.43

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Solution

The fourth proportional to 9,300.78, 13,953.12 and 2,726.43 is: 4,090.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,300.78 : 13,953.12 = 2,726.43 : x
  2. Step 2: Convert to fraction form
    9,300.78/13,953.12 = 2,726.43/x
  3. Step 3: Cross multiply
    9,300.78x = 13,953.12 × 2,726.43
  4. Step 4: Simplify right side
    9,300.78x = 38,042,204.96
  5. Step 5: Solve for x
    x = 38,042,204.96/9,300.78
  6. Step 6: Final answer
    x = 4,090.22

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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.