Home / 7,485.77-11,219.69-3,321.08

Finding the Fourth Proportional to 7,485.77, 11,219.69 and 3,321.08

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Solution

The fourth proportional to 7,485.77, 11,219.69 and 3,321.08 is: 4,977.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.77 : 11,219.69 = 3,321.08 : x
  2. Step 2: Convert to fraction form
    7,485.77/11,219.69 = 3,321.08/x
  3. Step 3: Cross multiply
    7,485.77x = 11,219.69 × 3,321.08
  4. Step 4: Simplify right side
    7,485.77x = 37,261,415.36
  5. Step 5: Solve for x
    x = 37,261,415.36/7,485.77
  6. Step 6: Final answer
    x = 4,977.64

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1.5x scale

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.