Home / 7,322.12-10,977.50-3,621.80

Finding the Fourth Proportional to 7,322.12, 10,977.50 and 3,621.80

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Solution

The fourth proportional to 7,322.12, 10,977.50 and 3,621.80 is: 5,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.12 : 10,977.50 = 3,621.80 : x
  2. Step 2: Convert to fraction form
    7,322.12/10,977.50 = 3,621.80/x
  3. Step 3: Cross multiply
    7,322.12x = 10,977.50 × 3,621.80
  4. Step 4: Simplify right side
    7,322.12x = 39,758,309.50
  5. Step 5: Solve for x
    x = 39,758,309.50/7,322.12
  6. Step 6: Final answer
    x = 5,429.89

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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.