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Finding the Fourth Proportional to 8,693.81, 11,997.53 and 5,107.81

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Solution

The fourth proportional to 8,693.81, 11,997.53 and 5,107.81 is: 7,048.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.81 : 11,997.53 = 5,107.81 : x
  2. Step 2: Convert to fraction form
    8,693.81/11,997.53 = 5,107.81/x
  3. Step 3: Cross multiply
    8,693.81x = 11,997.53 × 5,107.81
  4. Step 4: Simplify right side
    8,693.81x = 61,281,118.56
  5. Step 5: Solve for x
    x = 61,281,118.56/8,693.81
  6. Step 6: Final answer
    x = 7,048.82

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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.