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Finding the Fourth Proportional to 8,699.75, 13,051.79 and 2,543.75

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Solution

The fourth proportional to 8,699.75, 13,051.79 and 2,543.75 is: 3,816.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.75 : 13,051.79 = 2,543.75 : x
  2. Step 2: Convert to fraction form
    8,699.75/13,051.79 = 2,543.75/x
  3. Step 3: Cross multiply
    8,699.75x = 13,051.79 × 2,543.75
  4. Step 4: Simplify right side
    8,699.75x = 33,200,490.81
  5. Step 5: Solve for x
    x = 33,200,490.81/8,699.75
  6. Step 6: Final answer
    x = 3,816.26

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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.