Home / 3,187.79-4,781.56-1,108.27

Finding the Fourth Proportional to 3,187.79, 4,781.56 and 1,108.27

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Solution

The fourth proportional to 3,187.79, 4,781.56 and 1,108.27 is: 1,662.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.79 : 4,781.56 = 1,108.27 : x
  2. Step 2: Convert to fraction form
    3,187.79/4,781.56 = 1,108.27/x
  3. Step 3: Cross multiply
    3,187.79x = 4,781.56 × 1,108.27
  4. Step 4: Simplify right side
    3,187.79x = 5,299,244.78
  5. Step 5: Solve for x
    x = 5,299,244.78/3,187.79
  6. Step 6: Final answer
    x = 1,662.36

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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.