Home / 3,127.48-4,690.86-1,179.88

Finding the Fourth Proportional to 3,127.48, 4,690.86 and 1,179.88

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Solution

The fourth proportional to 3,127.48, 4,690.86 and 1,179.88 is: 1,769.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.48 : 4,690.86 = 1,179.88 : x
  2. Step 2: Convert to fraction form
    3,127.48/4,690.86 = 1,179.88/x
  3. Step 3: Cross multiply
    3,127.48x = 4,690.86 × 1,179.88
  4. Step 4: Simplify right side
    3,127.48x = 5,534,651.90
  5. Step 5: Solve for x
    x = 5,534,651.90/3,127.48
  6. Step 6: Final answer
    x = 1,769.68

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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.