Home / 3,127.08-4,690.68-818.64

Finding the Fourth Proportional to 3,127.08, 4,690.68 and 818.64

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Solution

The fourth proportional to 3,127.08, 4,690.68 and 818.64 is: 1,227.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.08 : 4,690.68 = 818.64 : x
  2. Step 2: Convert to fraction form
    3,127.08/4,690.68 = 818.64/x
  3. Step 3: Cross multiply
    3,127.08x = 4,690.68 × 818.64
  4. Step 4: Simplify right side
    3,127.08x = 3,839,978.28
  5. Step 5: Solve for x
    x = 3,839,978.28/3,127.08
  6. Step 6: Final answer
    x = 1,227.98

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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.