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Finding the Fourth Proportional to 8,703.18, 11,999.79 and 7,579.98

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Solution

The fourth proportional to 8,703.18, 11,999.79 and 7,579.98 is: 10,451.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,703.18 : 11,999.79 = 7,579.98 : x
  2. Step 2: Convert to fraction form
    8,703.18/11,999.79 = 7,579.98/x
  3. Step 3: Cross multiply
    8,703.18x = 11,999.79 × 7,579.98
  4. Step 4: Simplify right side
    8,703.18x = 90,958,168.20
  5. Step 5: Solve for x
    x = 90,958,168.20/8,703.18
  6. Step 6: Final answer
    x = 10,451.14

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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.