Home / 4,215.36-6,329.10-2,990.64

Finding the Fourth Proportional to 4,215.36, 6,329.10 and 2,990.64

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Solution

The fourth proportional to 4,215.36, 6,329.10 and 2,990.64 is: 4,490.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.36 : 6,329.10 = 2,990.64 : x
  2. Step 2: Convert to fraction form
    4,215.36/6,329.10 = 2,990.64/x
  3. Step 3: Cross multiply
    4,215.36x = 6,329.10 × 2,990.64
  4. Step 4: Simplify right side
    4,215.36x = 18,928,059.62
  5. Step 5: Solve for x
    x = 18,928,059.62/4,215.36
  6. Step 6: Final answer
    x = 4,490.26

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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.