Home / 3,938.86-5,435.85-2,260.25

Finding the Fourth Proportional to 3,938.86, 5,435.85 and 2,260.25

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Solution

The fourth proportional to 3,938.86, 5,435.85 and 2,260.25 is: 3,119.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.86 : 5,435.85 = 2,260.25 : x
  2. Step 2: Convert to fraction form
    3,938.86/5,435.85 = 2,260.25/x
  3. Step 3: Cross multiply
    3,938.86x = 5,435.85 × 2,260.25
  4. Step 4: Simplify right side
    3,938.86x = 12,286,379.96
  5. Step 5: Solve for x
    x = 12,286,379.96/3,938.86
  6. Step 6: Final answer
    x = 3,119.27

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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.