Home / 3,918.24-5,864.88-2,181.60

Finding the Fourth Proportional to 3,918.24, 5,864.88 and 2,181.60

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Solution

The fourth proportional to 3,918.24, 5,864.88 and 2,181.60 is: 3,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.24 : 5,864.88 = 2,181.60 : x
  2. Step 2: Convert to fraction form
    3,918.24/5,864.88 = 2,181.60/x
  3. Step 3: Cross multiply
    3,918.24x = 5,864.88 × 2,181.60
  4. Step 4: Simplify right side
    3,918.24x = 12,794,822.21
  5. Step 5: Solve for x
    x = 12,794,822.21/3,918.24
  6. Step 6: Final answer
    x = 3,265.45

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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.