Home / 4,215.92-6,321.80-1,617.20

Finding the Fourth Proportional to 4,215.92, 6,321.80 and 1,617.20

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Solution

The fourth proportional to 4,215.92, 6,321.80 and 1,617.20 is: 2,425.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.92 : 6,321.80 = 1,617.20 : x
  2. Step 2: Convert to fraction form
    4,215.92/6,321.80 = 1,617.20/x
  3. Step 3: Cross multiply
    4,215.92x = 6,321.80 × 1,617.20
  4. Step 4: Simplify right side
    4,215.92x = 10,223,614.96
  5. Step 5: Solve for x
    x = 10,223,614.96/4,215.92
  6. Step 6: Final answer
    x = 2,425.00

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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.