Home / 4,415.72-6,623.67-1,128.80

Finding the Fourth Proportional to 4,415.72, 6,623.67 and 1,128.80

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Solution

The fourth proportional to 4,415.72, 6,623.67 and 1,128.80 is: 1,693.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,415.72 : 6,623.67 = 1,128.80 : x
  2. Step 2: Convert to fraction form
    4,415.72/6,623.67 = 1,128.80/x
  3. Step 3: Cross multiply
    4,415.72x = 6,623.67 × 1,128.80
  4. Step 4: Simplify right side
    4,415.72x = 7,476,765.58
  5. Step 5: Solve for x
    x = 7,476,765.58/4,415.72
  6. Step 6: Final answer
    x = 1,693.22

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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.