Home / 5,161.68-7,123.29-2,803.98

Finding the Fourth Proportional to 5,161.68, 7,123.29 and 2,803.98

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Solution

The fourth proportional to 5,161.68, 7,123.29 and 2,803.98 is: 3,869.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.68 : 7,123.29 = 2,803.98 : x
  2. Step 2: Convert to fraction form
    5,161.68/7,123.29 = 2,803.98/x
  3. Step 3: Cross multiply
    5,161.68x = 7,123.29 × 2,803.98
  4. Step 4: Simplify right side
    5,161.68x = 19,973,562.69
  5. Step 5: Solve for x
    x = 19,973,562.69/5,161.68
  6. Step 6: Final answer
    x = 3,869.59

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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.