Home / 3,855.40-5,320.42-2,263.02

Finding the Fourth Proportional to 3,855.40, 5,320.42 and 2,263.02

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Solution

The fourth proportional to 3,855.40, 5,320.42 and 2,263.02 is: 3,122.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.40 : 5,320.42 = 2,263.02 : x
  2. Step 2: Convert to fraction form
    3,855.40/5,320.42 = 2,263.02/x
  3. Step 3: Cross multiply
    3,855.40x = 5,320.42 × 2,263.02
  4. Step 4: Simplify right side
    3,855.40x = 12,040,216.87
  5. Step 5: Solve for x
    x = 12,040,216.87/3,855.40
  6. Step 6: Final answer
    x = 3,122.95

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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.