Home / 5,181.69-7,772.47-1,286.06

Finding the Fourth Proportional to 5,181.69, 7,772.47 and 1,286.06

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Solution

The fourth proportional to 5,181.69, 7,772.47 and 1,286.06 is: 1,929.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.69 : 7,772.47 = 1,286.06 : x
  2. Step 2: Convert to fraction form
    5,181.69/7,772.47 = 1,286.06/x
  3. Step 3: Cross multiply
    5,181.69x = 7,772.47 × 1,286.06
  4. Step 4: Simplify right side
    5,181.69x = 9,995,862.77
  5. Step 5: Solve for x
    x = 9,995,862.77/5,181.69
  6. Step 6: Final answer
    x = 1,929.07

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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.