Home / 4,310.60-6,464.50-1,388.21

Finding the Fourth Proportional to 4,310.60, 6,464.50 and 1,388.21

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Solution

The fourth proportional to 4,310.60, 6,464.50 and 1,388.21 is: 2,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,310.60 : 6,464.50 = 1,388.21 : x
  2. Step 2: Convert to fraction form
    4,310.60/6,464.50 = 1,388.21/x
  3. Step 3: Cross multiply
    4,310.60x = 6,464.50 × 1,388.21
  4. Step 4: Simplify right side
    4,310.60x = 8,974,047.75
  5. Step 5: Solve for x
    x = 8,974,047.75/4,310.60
  6. Step 6: Final answer
    x = 2,081.86

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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.