Home / 3,961.20-5,464.74-2,388.40

Finding the Fourth Proportional to 3,961.20, 5,464.74 and 2,388.40

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Solution

The fourth proportional to 3,961.20, 5,464.74 and 2,388.40 is: 3,294.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.20 : 5,464.74 = 2,388.40 : x
  2. Step 2: Convert to fraction form
    3,961.20/5,464.74 = 2,388.40/x
  3. Step 3: Cross multiply
    3,961.20x = 5,464.74 × 2,388.40
  4. Step 4: Simplify right side
    3,961.20x = 13,051,985.02
  5. Step 5: Solve for x
    x = 13,051,985.02/3,961.20
  6. Step 6: Final answer
    x = 3,294.96

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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.