Home / 5,421.80-8,133.08-2,650.76

Finding the Fourth Proportional to 5,421.80, 8,133.08 and 2,650.76

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Solution

The fourth proportional to 5,421.80, 8,133.08 and 2,650.76 is: 3,976.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.80 : 8,133.08 = 2,650.76 : x
  2. Step 2: Convert to fraction form
    5,421.80/8,133.08 = 2,650.76/x
  3. Step 3: Cross multiply
    5,421.80x = 8,133.08 × 2,650.76
  4. Step 4: Simplify right side
    5,421.80x = 21,558,843.14
  5. Step 5: Solve for x
    x = 21,558,843.14/5,421.80
  6. Step 6: Final answer
    x = 3,976.33

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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.