Home / 5,319.43-7,984.08-2,688.80

Finding the Fourth Proportional to 5,319.43, 7,984.08 and 2,688.80

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Solution

The fourth proportional to 5,319.43, 7,984.08 and 2,688.80 is: 4,035.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.43 : 7,984.08 = 2,688.80 : x
  2. Step 2: Convert to fraction form
    5,319.43/7,984.08 = 2,688.80/x
  3. Step 3: Cross multiply
    5,319.43x = 7,984.08 × 2,688.80
  4. Step 4: Simplify right side
    5,319.43x = 21,467,554.27
  5. Step 5: Solve for x
    x = 21,467,554.27/5,319.43
  6. Step 6: Final answer
    x = 4,035.69

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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.