Home / 4,419.60-6,623.68-1,821.12

Finding the Fourth Proportional to 4,419.60, 6,623.68 and 1,821.12

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Solution

The fourth proportional to 4,419.60, 6,623.68 and 1,821.12 is: 2,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,419.60 : 6,623.68 = 1,821.12 : x
  2. Step 2: Convert to fraction form
    4,419.60/6,623.68 = 1,821.12/x
  3. Step 3: Cross multiply
    4,419.60x = 6,623.68 × 1,821.12
  4. Step 4: Simplify right side
    4,419.60x = 12,062,516.12
  5. Step 5: Solve for x
    x = 12,062,516.12/4,419.60
  6. Step 6: Final answer
    x = 2,729.32

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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.