Home / 3,918.75-5,905.64-3,529.19

Finding the Fourth Proportional to 3,918.75, 5,905.64 and 3,529.19

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Solution

The fourth proportional to 3,918.75, 5,905.64 and 3,529.19 is: 5,318.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.75 : 5,905.64 = 3,529.19 : x
  2. Step 2: Convert to fraction form
    3,918.75/5,905.64 = 3,529.19/x
  3. Step 3: Cross multiply
    3,918.75x = 5,905.64 × 3,529.19
  4. Step 4: Simplify right side
    3,918.75x = 20,842,078.46
  5. Step 5: Solve for x
    x = 20,842,078.46/3,918.75
  6. Step 6: Final answer
    x = 5,318.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.