Home / 3,959.76-5,464.08-2,190.96

Finding the Fourth Proportional to 3,959.76, 5,464.08 and 2,190.96

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Solution

The fourth proportional to 3,959.76, 5,464.08 and 2,190.96 is: 3,023.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.76 : 5,464.08 = 2,190.96 : x
  2. Step 2: Convert to fraction form
    3,959.76/5,464.08 = 2,190.96/x
  3. Step 3: Cross multiply
    3,959.76x = 5,464.08 × 2,190.96
  4. Step 4: Simplify right side
    3,959.76x = 11,971,580.72
  5. Step 5: Solve for x
    x = 11,971,580.72/3,959.76
  6. Step 6: Final answer
    x = 3,023.31

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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.