Home / 4,218.92-6,328.38-1,621.25

Finding the Fourth Proportional to 4,218.92, 6,328.38 and 1,621.25

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Solution

The fourth proportional to 4,218.92, 6,328.38 and 1,621.25 is: 2,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.92 : 6,328.38 = 1,621.25 : x
  2. Step 2: Convert to fraction form
    4,218.92/6,328.38 = 1,621.25/x
  3. Step 3: Cross multiply
    4,218.92x = 6,328.38 × 1,621.25
  4. Step 4: Simplify right side
    4,218.92x = 10,259,886.08
  5. Step 5: Solve for x
    x = 10,259,886.08/4,218.92
  6. Step 6: Final answer
    x = 2,431.88

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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.