Home / 8,621.75-12,933.64-3,075.89

Finding the Fourth Proportional to 8,621.75, 12,933.64 and 3,075.89

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Solution

The fourth proportional to 8,621.75, 12,933.64 and 3,075.89 is: 4,614.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.75 : 12,933.64 = 3,075.89 : x
  2. Step 2: Convert to fraction form
    8,621.75/12,933.64 = 3,075.89/x
  3. Step 3: Cross multiply
    8,621.75x = 12,933.64 × 3,075.89
  4. Step 4: Simplify right side
    8,621.75x = 39,782,393.12
  5. Step 5: Solve for x
    x = 39,782,393.12/8,621.75
  6. Step 6: Final answer
    x = 4,614.19

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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.