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Finding the Fourth Proportional to 6,556.80, 9,835.20 and 5,404.80

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Solution

The fourth proportional to 6,556.80, 9,835.20 and 5,404.80 is: 8,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,556.80 : 9,835.20 = 5,404.80 : x
  2. Step 2: Convert to fraction form
    6,556.80/9,835.20 = 5,404.80/x
  3. Step 3: Cross multiply
    6,556.80x = 9,835.20 × 5,404.80
  4. Step 4: Simplify right side
    6,556.80x = 53,157,288.96
  5. Step 5: Solve for x
    x = 53,157,288.96/6,556.80
  6. Step 6: Final answer
    x = 8,107.20

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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.