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Finding the Fourth Proportional to 9,997.70, 14,978.10 and 5,839.70

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Solution

The fourth proportional to 9,997.70, 14,978.10 and 5,839.70 is: 8,748.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,997.70 : 14,978.10 = 5,839.70 : x
  2. Step 2: Convert to fraction form
    9,997.70/14,978.10 = 5,839.70/x
  3. Step 3: Cross multiply
    9,997.70x = 14,978.10 × 5,839.70
  4. Step 4: Simplify right side
    9,997.70x = 87,467,610.57
  5. Step 5: Solve for x
    x = 87,467,610.57/9,997.70
  6. Step 6: Final answer
    x = 8,748.77

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1.5x scale

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.