Home / 3,855.50-5,320.20-2,176.74

Finding the Fourth Proportional to 3,855.50, 5,320.20 and 2,176.74

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Solution

The fourth proportional to 3,855.50, 5,320.20 and 2,176.74 is: 3,003.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.50 : 5,320.20 = 2,176.74 : x
  2. Step 2: Convert to fraction form
    3,855.50/5,320.20 = 2,176.74/x
  3. Step 3: Cross multiply
    3,855.50x = 5,320.20 × 2,176.74
  4. Step 4: Simplify right side
    3,855.50x = 11,580,692.15
  5. Step 5: Solve for x
    x = 11,580,692.15/3,855.50
  6. Step 6: Final answer
    x = 3,003.68

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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.