Home / 5,147.17-7,103.09-2,789.31

Finding the Fourth Proportional to 5,147.17, 7,103.09 and 2,789.31

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Solution

The fourth proportional to 5,147.17, 7,103.09 and 2,789.31 is: 3,849.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.17 : 7,103.09 = 2,789.31 : x
  2. Step 2: Convert to fraction form
    5,147.17/7,103.09 = 2,789.31/x
  3. Step 3: Cross multiply
    5,147.17x = 7,103.09 × 2,789.31
  4. Step 4: Simplify right side
    5,147.17x = 19,812,670.51
  5. Step 5: Solve for x
    x = 19,812,670.51/5,147.17
  6. Step 6: Final answer
    x = 3,849.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.