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Finding the Fourth Proportional to 8,999.88, 13,499.10 and 5,705.70

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Solution

The fourth proportional to 8,999.88, 13,499.10 and 5,705.70 is: 8,558.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.88 : 13,499.10 = 5,705.70 : x
  2. Step 2: Convert to fraction form
    8,999.88/13,499.10 = 5,705.70/x
  3. Step 3: Cross multiply
    8,999.88x = 13,499.10 × 5,705.70
  4. Step 4: Simplify right side
    8,999.88x = 77,021,814.87
  5. Step 5: Solve for x
    x = 77,021,814.87/8,999.88
  6. Step 6: Final answer
    x = 8,558.09

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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.