Home / 5,078.48-7,621.11-1,791.59

Finding the Fourth Proportional to 5,078.48, 7,621.11 and 1,791.59

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Solution

The fourth proportional to 5,078.48, 7,621.11 and 1,791.59 is: 2,688.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.48 : 7,621.11 = 1,791.59 : x
  2. Step 2: Convert to fraction form
    5,078.48/7,621.11 = 1,791.59/x
  3. Step 3: Cross multiply
    5,078.48x = 7,621.11 × 1,791.59
  4. Step 4: Simplify right side
    5,078.48x = 13,653,866.36
  5. Step 5: Solve for x
    x = 13,653,866.36/5,078.48
  6. Step 6: Final answer
    x = 2,688.58

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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.