Home / 4,815.60-7,215.72-3,082.80

Finding the Fourth Proportional to 4,815.60, 7,215.72 and 3,082.80

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Solution

The fourth proportional to 4,815.60, 7,215.72 and 3,082.80 is: 4,619.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.60 : 7,215.72 = 3,082.80 : x
  2. Step 2: Convert to fraction form
    4,815.60/7,215.72 = 3,082.80/x
  3. Step 3: Cross multiply
    4,815.60x = 7,215.72 × 3,082.80
  4. Step 4: Simplify right side
    4,815.60x = 22,244,621.62
  5. Step 5: Solve for x
    x = 22,244,621.62/4,815.60
  6. Step 6: Final answer
    x = 4,619.28

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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.