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Finding the Fourth Proportional to 8,559.77, 12,840.10 and 2,716.83

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Solution

The fourth proportional to 8,559.77, 12,840.10 and 2,716.83 is: 4,075.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.77 : 12,840.10 = 2,716.83 : x
  2. Step 2: Convert to fraction form
    8,559.77/12,840.10 = 2,716.83/x
  3. Step 3: Cross multiply
    8,559.77x = 12,840.10 × 2,716.83
  4. Step 4: Simplify right side
    8,559.77x = 34,884,362.09
  5. Step 5: Solve for x
    x = 34,884,362.09/8,559.77
  6. Step 6: Final answer
    x = 4,075.39

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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.