Home / 3,815.88-5,265.12-2,137.02

Finding the Fourth Proportional to 3,815.88, 5,265.12 and 2,137.02

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Solution

The fourth proportional to 3,815.88, 5,265.12 and 2,137.02 is: 2,948.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.88 : 5,265.12 = 2,137.02 : x
  2. Step 2: Convert to fraction form
    3,815.88/5,265.12 = 2,137.02/x
  3. Step 3: Cross multiply
    3,815.88x = 5,265.12 × 2,137.02
  4. Step 4: Simplify right side
    3,815.88x = 11,251,666.74
  5. Step 5: Solve for x
    x = 11,251,666.74/3,815.88
  6. Step 6: Final answer
    x = 2,948.64

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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.