Home / 3,280.91-4,918.32-1,089.14

Finding the Fourth Proportional to 3,280.91, 4,918.32 and 1,089.14

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Solution

The fourth proportional to 3,280.91, 4,918.32 and 1,089.14 is: 1,632.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.91 : 4,918.32 = 1,089.14 : x
  2. Step 2: Convert to fraction form
    3,280.91/4,918.32 = 1,089.14/x
  3. Step 3: Cross multiply
    3,280.91x = 4,918.32 × 1,089.14
  4. Step 4: Simplify right side
    3,280.91x = 5,356,714.45
  5. Step 5: Solve for x
    x = 5,356,714.45/3,280.91
  6. Step 6: Final answer
    x = 1,632.69

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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.