Home / 3,855.15-5,318.46-2,438.15

Finding the Fourth Proportional to 3,855.15, 5,318.46 and 2,438.15

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Solution

The fourth proportional to 3,855.15, 5,318.46 and 2,438.15 is: 3,363.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.15 : 5,318.46 = 2,438.15 : x
  2. Step 2: Convert to fraction form
    3,855.15/5,318.46 = 2,438.15/x
  3. Step 3: Cross multiply
    3,855.15x = 5,318.46 × 2,438.15
  4. Step 4: Simplify right side
    3,855.15x = 12,967,176.66
  5. Step 5: Solve for x
    x = 12,967,176.66/3,855.15
  6. Step 6: Final answer
    x = 3,363.60

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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.