Home / 4,161.60-5,749.76-4,120.64

Finding the Fourth Proportional to 4,161.60, 5,749.76 and 4,120.64

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Solution

The fourth proportional to 4,161.60, 5,749.76 and 4,120.64 is: 5,693.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,161.60 : 5,749.76 = 4,120.64 : x
  2. Step 2: Convert to fraction form
    4,161.60/5,749.76 = 4,120.64/x
  3. Step 3: Cross multiply
    4,161.60x = 5,749.76 × 4,120.64
  4. Step 4: Simplify right side
    4,161.60x = 23,692,691.05
  5. Step 5: Solve for x
    x = 23,692,691.05/4,161.60
  6. Step 6: Final answer
    x = 5,693.17

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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.