Home / 7,228.52-10,838.30-3,121

Finding the Fourth Proportional to 7,228.52, 10,838.30 and 3,121

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Solution

The fourth proportional to 7,228.52, 10,838.30 and 3,121 is: 4,679.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,228.52 : 10,838.30 = 3,121 : x
  2. Step 2: Convert to fraction form
    7,228.52/10,838.30 = 3,121/x
  3. Step 3: Cross multiply
    7,228.52x = 10,838.30 × 3,121
  4. Step 4: Simplify right side
    7,228.52x = 33,826,334.30
  5. Step 5: Solve for x
    x = 33,826,334.30/7,228.52
  6. Step 6: Final answer
    x = 4,679.57

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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.