Home / 7,390.80-11,102.40-5,455.44

Finding the Fourth Proportional to 7,390.80, 11,102.40 and 5,455.44

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Solution

The fourth proportional to 7,390.80, 11,102.40 and 5,455.44 is: 8,195.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.80 : 11,102.40 = 5,455.44 : x
  2. Step 2: Convert to fraction form
    7,390.80/11,102.40 = 5,455.44/x
  3. Step 3: Cross multiply
    7,390.80x = 11,102.40 × 5,455.44
  4. Step 4: Simplify right side
    7,390.80x = 60,568,477.06
  5. Step 5: Solve for x
    x = 60,568,477.06/7,390.80
  6. Step 6: Final answer
    x = 8,195.12

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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.