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Finding the Fourth Proportional to 3,255.66, 4,489.31 and 3,187.31

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Solution

The fourth proportional to 3,255.66, 4,489.31 and 3,187.31 is: 4,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,255.66 : 4,489.31 = 3,187.31 : x
  2. Step 2: Convert to fraction form
    3,255.66/4,489.31 = 3,187.31/x
  3. Step 3: Cross multiply
    3,255.66x = 4,489.31 × 3,187.31
  4. Step 4: Simplify right side
    3,255.66x = 14,308,784.27
  5. Step 5: Solve for x
    x = 14,308,784.27/3,255.66
  6. Step 6: Final answer
    x = 4,395.05

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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.