Home / 4,815.92-6,646.58-2,720

Finding the Fourth Proportional to 4,815.92, 6,646.58 and 2,720

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Solution

The fourth proportional to 4,815.92, 6,646.58 and 2,720 is: 3,753.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.92 : 6,646.58 = 2,720 : x
  2. Step 2: Convert to fraction form
    4,815.92/6,646.58 = 2,720/x
  3. Step 3: Cross multiply
    4,815.92x = 6,646.58 × 2,720
  4. Step 4: Simplify right side
    4,815.92x = 18,078,697.60
  5. Step 5: Solve for x
    x = 18,078,697.60/4,815.92
  6. Step 6: Final answer
    x = 3,753.94

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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.