Home / 2,587.21-3,880.82-943.88

Finding the Fourth Proportional to 2,587.21, 3,880.82 and 943.88

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Solution

The fourth proportional to 2,587.21, 3,880.82 and 943.88 is: 1,415.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.21 : 3,880.82 = 943.88 : x
  2. Step 2: Convert to fraction form
    2,587.21/3,880.82 = 943.88/x
  3. Step 3: Cross multiply
    2,587.21x = 3,880.82 × 943.88
  4. Step 4: Simplify right side
    2,587.21x = 3,663,040.44
  5. Step 5: Solve for x
    x = 3,663,040.44/2,587.21
  6. Step 6: Final answer
    x = 1,415.83

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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.