Home / 8,078.72-11,148.68-4,541.90

Finding the Fourth Proportional to 8,078.72, 11,148.68 and 4,541.90

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Solution

The fourth proportional to 8,078.72, 11,148.68 and 4,541.90 is: 6,267.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.72 : 11,148.68 = 4,541.90 : x
  2. Step 2: Convert to fraction form
    8,078.72/11,148.68 = 4,541.90/x
  3. Step 3: Cross multiply
    8,078.72x = 11,148.68 × 4,541.90
  4. Step 4: Simplify right side
    8,078.72x = 50,636,189.69
  5. Step 5: Solve for x
    x = 50,636,189.69/8,078.72
  6. Step 6: Final answer
    x = 6,267.85

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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.