Home / 7,142.85-10,715.81-3,633.35

Finding the Fourth Proportional to 7,142.85, 10,715.81 and 3,633.35

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Solution

The fourth proportional to 7,142.85, 10,715.81 and 3,633.35 is: 5,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.85 : 10,715.81 = 3,633.35 : x
  2. Step 2: Convert to fraction form
    7,142.85/10,715.81 = 3,633.35/x
  3. Step 3: Cross multiply
    7,142.85x = 10,715.81 × 3,633.35
  4. Step 4: Simplify right side
    7,142.85x = 38,934,216.52
  5. Step 5: Solve for x
    x = 38,934,216.52/7,142.85
  6. Step 6: Final answer
    x = 5,450.80

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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.