Home / 3,405.77-5,115.14-2,116.25

Finding the Fourth Proportional to 3,405.77, 5,115.14 and 2,116.25

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Solution

The fourth proportional to 3,405.77, 5,115.14 and 2,116.25 is: 3,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.77 : 5,115.14 = 2,116.25 : x
  2. Step 2: Convert to fraction form
    3,405.77/5,115.14 = 2,116.25/x
  3. Step 3: Cross multiply
    3,405.77x = 5,115.14 × 2,116.25
  4. Step 4: Simplify right side
    3,405.77x = 10,824,904.44
  5. Step 5: Solve for x
    x = 10,824,904.44/3,405.77
  6. Step 6: Final answer
    x = 3,178.40

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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.