Home / 3,968.85-5,472.39-3,220.47

Finding the Fourth Proportional to 3,968.85, 5,472.39 and 3,220.47

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Solution

The fourth proportional to 3,968.85, 5,472.39 and 3,220.47 is: 4,440.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.85 : 5,472.39 = 3,220.47 : x
  2. Step 2: Convert to fraction form
    3,968.85/5,472.39 = 3,220.47/x
  3. Step 3: Cross multiply
    3,968.85x = 5,472.39 × 3,220.47
  4. Step 4: Simplify right side
    3,968.85x = 17,623,667.82
  5. Step 5: Solve for x
    x = 17,623,667.82/3,968.85
  6. Step 6: Final answer
    x = 4,440.50

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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.