Home / 3,180.87-4,769.48-1,100.28

Finding the Fourth Proportional to 3,180.87, 4,769.48 and 1,100.28

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Solution

The fourth proportional to 3,180.87, 4,769.48 and 1,100.28 is: 1,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.87 : 4,769.48 = 1,100.28 : x
  2. Step 2: Convert to fraction form
    3,180.87/4,769.48 = 1,100.28/x
  3. Step 3: Cross multiply
    3,180.87x = 4,769.48 × 1,100.28
  4. Step 4: Simplify right side
    3,180.87x = 5,247,784.09
  5. Step 5: Solve for x
    x = 5,247,784.09/3,180.87
  6. Step 6: Final answer
    x = 1,649.80

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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.