Home / 3,918.34-5,406.24-2,521.90

Finding the Fourth Proportional to 3,918.34, 5,406.24 and 2,521.90

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Solution

The fourth proportional to 3,918.34, 5,406.24 and 2,521.90 is: 3,479.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.34 : 5,406.24 = 2,521.90 : x
  2. Step 2: Convert to fraction form
    3,918.34/5,406.24 = 2,521.90/x
  3. Step 3: Cross multiply
    3,918.34x = 5,406.24 × 2,521.90
  4. Step 4: Simplify right side
    3,918.34x = 13,633,996.66
  5. Step 5: Solve for x
    x = 13,633,996.66/3,918.34
  6. Step 6: Final answer
    x = 3,479.53

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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.