Home / 3,855.47-5,777.67-2,190.92

Finding the Fourth Proportional to 3,855.47, 5,777.67 and 2,190.92

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Solution

The fourth proportional to 3,855.47, 5,777.67 and 2,190.92 is: 3,283.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.47 : 5,777.67 = 2,190.92 : x
  2. Step 2: Convert to fraction form
    3,855.47/5,777.67 = 2,190.92/x
  3. Step 3: Cross multiply
    3,855.47x = 5,777.67 × 2,190.92
  4. Step 4: Simplify right side
    3,855.47x = 12,658,412.76
  5. Step 5: Solve for x
    x = 12,658,412.76/3,855.47
  6. Step 6: Final answer
    x = 3,283.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.