Home / 5,123.68-7,688.50-2,161.94

Finding the Fourth Proportional to 5,123.68, 7,688.50 and 2,161.94

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Solution

The fourth proportional to 5,123.68, 7,688.50 and 2,161.94 is: 3,244.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.68 : 7,688.50 = 2,161.94 : x
  2. Step 2: Convert to fraction form
    5,123.68/7,688.50 = 2,161.94/x
  3. Step 3: Cross multiply
    5,123.68x = 7,688.50 × 2,161.94
  4. Step 4: Simplify right side
    5,123.68x = 16,622,075.69
  5. Step 5: Solve for x
    x = 16,622,075.69/5,123.68
  6. Step 6: Final answer
    x = 3,244.17

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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.