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Finding the Fourth Proportional to 8,693.90, 11,997.65 and 5,108.99

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Solution

The fourth proportional to 8,693.90, 11,997.65 and 5,108.99 is: 7,050.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,693.90 : 11,997.65 = 5,108.99 : x
  2. Step 2: Convert to fraction form
    8,693.90/11,997.65 = 5,108.99/x
  3. Step 3: Cross multiply
    8,693.90x = 11,997.65 × 5,108.99
  4. Step 4: Simplify right side
    8,693.90x = 61,295,848.33
  5. Step 5: Solve for x
    x = 61,295,848.33/8,693.90
  6. Step 6: Final answer
    x = 7,050.45

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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.