Home / 3,486.39-5,228.87-2,905.14

Finding the Fourth Proportional to 3,486.39, 5,228.87 and 2,905.14

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Solution

The fourth proportional to 3,486.39, 5,228.87 and 2,905.14 is: 4,357.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.39 : 5,228.87 = 2,905.14 : x
  2. Step 2: Convert to fraction form
    3,486.39/5,228.87 = 2,905.14/x
  3. Step 3: Cross multiply
    3,486.39x = 5,228.87 × 2,905.14
  4. Step 4: Simplify right side
    3,486.39x = 15,190,584.87
  5. Step 5: Solve for x
    x = 15,190,584.87/3,486.39
  6. Step 6: Final answer
    x = 4,357.11

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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.