Home / 5,221.58-7,212.68-3,892.98

Finding the Fourth Proportional to 5,221.58, 7,212.68 and 3,892.98

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Solution

The fourth proportional to 5,221.58, 7,212.68 and 3,892.98 is: 5,377.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.58 : 7,212.68 = 3,892.98 : x
  2. Step 2: Convert to fraction form
    5,221.58/7,212.68 = 3,892.98/x
  3. Step 3: Cross multiply
    5,221.58x = 7,212.68 × 3,892.98
  4. Step 4: Simplify right side
    5,221.58x = 28,078,818.99
  5. Step 5: Solve for x
    x = 28,078,818.99/5,221.58
  6. Step 6: Final answer
    x = 5,377.46

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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.