Home / 3,278.90-4,918.47-1,087.82

Finding the Fourth Proportional to 3,278.90, 4,918.47 and 1,087.82

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Solution

The fourth proportional to 3,278.90, 4,918.47 and 1,087.82 is: 1,631.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.90 : 4,918.47 = 1,087.82 : x
  2. Step 2: Convert to fraction form
    3,278.90/4,918.47 = 1,087.82/x
  3. Step 3: Cross multiply
    3,278.90x = 4,918.47 × 1,087.82
  4. Step 4: Simplify right side
    3,278.90x = 5,350,410.04
  5. Step 5: Solve for x
    x = 5,350,410.04/3,278.90
  6. Step 6: Final answer
    x = 1,631.77

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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.