Home / 5,518.72-8,279.43-1,623.16

Finding the Fourth Proportional to 5,518.72, 8,279.43 and 1,623.16

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Solution

The fourth proportional to 5,518.72, 8,279.43 and 1,623.16 is: 2,435.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.72 : 8,279.43 = 1,623.16 : x
  2. Step 2: Convert to fraction form
    5,518.72/8,279.43 = 1,623.16/x
  3. Step 3: Cross multiply
    5,518.72x = 8,279.43 × 1,623.16
  4. Step 4: Simplify right side
    5,518.72x = 13,438,839.60
  5. Step 5: Solve for x
    x = 13,438,839.60/5,518.72
  6. Step 6: Final answer
    x = 2,435.14

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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.