Home / 5,221.80-7,205.58-3,125.88

Finding the Fourth Proportional to 5,221.80, 7,205.58 and 3,125.88

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Solution

The fourth proportional to 5,221.80, 7,205.58 and 3,125.88 is: 4,313.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.80 : 7,205.58 = 3,125.88 : x
  2. Step 2: Convert to fraction form
    5,221.80/7,205.58 = 3,125.88/x
  3. Step 3: Cross multiply
    5,221.80x = 7,205.58 × 3,125.88
  4. Step 4: Simplify right side
    5,221.80x = 22,523,778.41
  5. Step 5: Solve for x
    x = 22,523,778.41/5,221.80
  6. Step 6: Final answer
    x = 4,313.41

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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.