Home / 5,109.48-7,051.50-2,872.08

Finding the Fourth Proportional to 5,109.48, 7,051.50 and 2,872.08

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Solution

The fourth proportional to 5,109.48, 7,051.50 and 2,872.08 is: 3,963.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.48 : 7,051.50 = 2,872.08 : x
  2. Step 2: Convert to fraction form
    5,109.48/7,051.50 = 2,872.08/x
  3. Step 3: Cross multiply
    5,109.48x = 7,051.50 × 2,872.08
  4. Step 4: Simplify right side
    5,109.48x = 20,252,472.12
  5. Step 5: Solve for x
    x = 20,252,472.12/5,109.48
  6. Step 6: Final answer
    x = 3,963.71

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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.