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Finding the Fourth Proportional to 8,673.88, 11,971.37 and 5,318.54

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Solution

The fourth proportional to 8,673.88, 11,971.37 and 5,318.54 is: 7,340.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.88 : 11,971.37 = 5,318.54 : x
  2. Step 2: Convert to fraction form
    8,673.88/11,971.37 = 5,318.54/x
  3. Step 3: Cross multiply
    8,673.88x = 11,971.37 × 5,318.54
  4. Step 4: Simplify right side
    8,673.88x = 63,670,210.20
  5. Step 5: Solve for x
    x = 63,670,210.20/8,673.88
  6. Step 6: Final answer
    x = 7,340.45

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1.5x scale

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.