Home / 8,200.86-11,315.37-5,221.07

Finding the Fourth Proportional to 8,200.86, 11,315.37 and 5,221.07

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Solution

The fourth proportional to 8,200.86, 11,315.37 and 5,221.07 is: 7,203.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,200.86 : 11,315.37 = 5,221.07 : x
  2. Step 2: Convert to fraction form
    8,200.86/11,315.37 = 5,221.07/x
  3. Step 3: Cross multiply
    8,200.86x = 11,315.37 × 5,221.07
  4. Step 4: Simplify right side
    8,200.86x = 59,078,338.85
  5. Step 5: Solve for x
    x = 59,078,338.85/8,200.86
  6. Step 6: Final answer
    x = 7,203.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.