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Finding the Fourth Proportional to 3,955.72, 5,923.86 and 3,170.20

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Solution

The fourth proportional to 3,955.72, 5,923.86 and 3,170.20 is: 4,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,955.72 : 5,923.86 = 3,170.20 : x
  2. Step 2: Convert to fraction form
    3,955.72/5,923.86 = 3,170.20/x
  3. Step 3: Cross multiply
    3,955.72x = 5,923.86 × 3,170.20
  4. Step 4: Simplify right side
    3,955.72x = 18,779,820.97
  5. Step 5: Solve for x
    x = 18,779,820.97/3,955.72
  6. Step 6: Final answer
    x = 4,747.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.