Home / 5,161.78-7,123.03-2,803.87

Finding the Fourth Proportional to 5,161.78, 7,123.03 and 2,803.87

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Solution

The fourth proportional to 5,161.78, 7,123.03 and 2,803.87 is: 3,869.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.78 : 7,123.03 = 2,803.87 : x
  2. Step 2: Convert to fraction form
    5,161.78/7,123.03 = 2,803.87/x
  3. Step 3: Cross multiply
    5,161.78x = 7,123.03 × 2,803.87
  4. Step 4: Simplify right side
    5,161.78x = 19,972,050.13
  5. Step 5: Solve for x
    x = 19,972,050.13/5,161.78
  6. Step 6: Final answer
    x = 3,869.22

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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.