Home / 3,903.80-5,388.46-3,212.60

Finding the Fourth Proportional to 3,903.80, 5,388.46 and 3,212.60

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Solution

The fourth proportional to 3,903.80, 5,388.46 and 3,212.60 is: 4,434.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.80 : 5,388.46 = 3,212.60 : x
  2. Step 2: Convert to fraction form
    3,903.80/5,388.46 = 3,212.60/x
  3. Step 3: Cross multiply
    3,903.80x = 5,388.46 × 3,212.60
  4. Step 4: Simplify right side
    3,903.80x = 17,310,966.60
  5. Step 5: Solve for x
    x = 17,310,966.60/3,903.80
  6. Step 6: Final answer
    x = 4,434.39

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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.