Home / 4,269.60-6,404.40-2,620.80

Finding the Fourth Proportional to 4,269.60, 6,404.40 and 2,620.80

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Solution

The fourth proportional to 4,269.60, 6,404.40 and 2,620.80 is: 3,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,269.60 : 6,404.40 = 2,620.80 : x
  2. Step 2: Convert to fraction form
    4,269.60/6,404.40 = 2,620.80/x
  3. Step 3: Cross multiply
    4,269.60x = 6,404.40 × 2,620.80
  4. Step 4: Simplify right side
    4,269.60x = 16,784,651.52
  5. Step 5: Solve for x
    x = 16,784,651.52/4,269.60
  6. Step 6: Final answer
    x = 3,931.20

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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.