Home / 5,578.72-7,700.56-3,221.84

Finding the Fourth Proportional to 5,578.72, 7,700.56 and 3,221.84

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Solution

The fourth proportional to 5,578.72, 7,700.56 and 3,221.84 is: 4,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.72 : 7,700.56 = 3,221.84 : x
  2. Step 2: Convert to fraction form
    5,578.72/7,700.56 = 3,221.84/x
  3. Step 3: Cross multiply
    5,578.72x = 7,700.56 × 3,221.84
  4. Step 4: Simplify right side
    5,578.72x = 24,809,972.23
  5. Step 5: Solve for x
    x = 24,809,972.23/5,578.72
  6. Step 6: Final answer
    x = 4,447.25

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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.