Home / 5,571.76-7,681.68-3,997.12

Finding the Fourth Proportional to 5,571.76, 7,681.68 and 3,997.12

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Solution

The fourth proportional to 5,571.76, 7,681.68 and 3,997.12 is: 5,510.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,571.76 : 7,681.68 = 3,997.12 : x
  2. Step 2: Convert to fraction form
    5,571.76/7,681.68 = 3,997.12/x
  3. Step 3: Cross multiply
    5,571.76x = 7,681.68 × 3,997.12
  4. Step 4: Simplify right side
    5,571.76x = 30,704,596.76
  5. Step 5: Solve for x
    x = 30,704,596.76/5,571.76
  6. Step 6: Final answer
    x = 5,510.75

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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.