Home / 4,564.80-6,861.60-4,219.20

Finding the Fourth Proportional to 4,564.80, 6,861.60 and 4,219.20

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Solution

The fourth proportional to 4,564.80, 6,861.60 and 4,219.20 is: 6,342.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,564.80 : 6,861.60 = 4,219.20 : x
  2. Step 2: Convert to fraction form
    4,564.80/6,861.60 = 4,219.20/x
  3. Step 3: Cross multiply
    4,564.80x = 6,861.60 × 4,219.20
  4. Step 4: Simplify right side
    4,564.80x = 28,950,462.72
  5. Step 5: Solve for x
    x = 28,950,462.72/4,564.80
  6. Step 6: Final answer
    x = 6,342.11

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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.