Home / 4,380.60-6,564.90-2,815.80

Finding the Fourth Proportional to 4,380.60, 6,564.90 and 2,815.80

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Solution

The fourth proportional to 4,380.60, 6,564.90 and 2,815.80 is: 4,219.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,380.60 : 6,564.90 = 2,815.80 : x
  2. Step 2: Convert to fraction form
    4,380.60/6,564.90 = 2,815.80/x
  3. Step 3: Cross multiply
    4,380.60x = 6,564.90 × 2,815.80
  4. Step 4: Simplify right side
    4,380.60x = 18,485,445.42
  5. Step 5: Solve for x
    x = 18,485,445.42/4,380.60
  6. Step 6: Final answer
    x = 4,219.84

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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.