Home / 4,428.56-6,638.52-2,121.68

Finding the Fourth Proportional to 4,428.56, 6,638.52 and 2,121.68

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Solution

The fourth proportional to 4,428.56, 6,638.52 and 2,121.68 is: 3,180.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,428.56 : 6,638.52 = 2,121.68 : x
  2. Step 2: Convert to fraction form
    4,428.56/6,638.52 = 2,121.68/x
  3. Step 3: Cross multiply
    4,428.56x = 6,638.52 × 2,121.68
  4. Step 4: Simplify right side
    4,428.56x = 14,084,815.11
  5. Step 5: Solve for x
    x = 14,084,815.11/4,428.56
  6. Step 6: Final answer
    x = 3,180.45

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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.