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Finding the Fourth Proportional to 5,682.64, 7,842.02 and 3,164.78

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Solution

The fourth proportional to 5,682.64, 7,842.02 and 3,164.78 is: 4,367.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,682.64 : 7,842.02 = 3,164.78 : x
  2. Step 2: Convert to fraction form
    5,682.64/7,842.02 = 3,164.78/x
  3. Step 3: Cross multiply
    5,682.64x = 7,842.02 × 3,164.78
  4. Step 4: Simplify right side
    5,682.64x = 24,818,240.54
  5. Step 5: Solve for x
    x = 24,818,240.54/5,682.64
  6. Step 6: Final answer
    x = 4,367.38

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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.