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Finding the Fourth Proportional to 8,655.38, 11,945.31 and 5,300.41

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Solution

The fourth proportional to 8,655.38, 11,945.31 and 5,300.41 is: 7,315.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.38 : 11,945.31 = 5,300.41 : x
  2. Step 2: Convert to fraction form
    8,655.38/11,945.31 = 5,300.41/x
  3. Step 3: Cross multiply
    8,655.38x = 11,945.31 × 5,300.41
  4. Step 4: Simplify right side
    8,655.38x = 63,315,040.58
  5. Step 5: Solve for x
    x = 63,315,040.58/8,655.38
  6. Step 6: Final answer
    x = 7,315.11

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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.