Home / 4,319.20-6,475.60-1,720.80

Finding the Fourth Proportional to 4,319.20, 6,475.60 and 1,720.80

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Solution

The fourth proportional to 4,319.20, 6,475.60 and 1,720.80 is: 2,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,319.20 : 6,475.60 = 1,720.80 : x
  2. Step 2: Convert to fraction form
    4,319.20/6,475.60 = 1,720.80/x
  3. Step 3: Cross multiply
    4,319.20x = 6,475.60 × 1,720.80
  4. Step 4: Simplify right side
    4,319.20x = 11,143,212.48
  5. Step 5: Solve for x
    x = 11,143,212.48/4,319.20
  6. Step 6: Final answer
    x = 2,579.93

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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.