Home / 5,179.47-7,770.50-1,669.80

Finding the Fourth Proportional to 5,179.47, 7,770.50 and 1,669.80

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Solution

The fourth proportional to 5,179.47, 7,770.50 and 1,669.80 is: 2,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.47 : 7,770.50 = 1,669.80 : x
  2. Step 2: Convert to fraction form
    5,179.47/7,770.50 = 1,669.80/x
  3. Step 3: Cross multiply
    5,179.47x = 7,770.50 × 1,669.80
  4. Step 4: Simplify right side
    5,179.47x = 12,975,172.55
  5. Step 5: Solve for x
    x = 12,975,172.55/5,179.47
  6. Step 6: Final answer
    x = 2,505.12

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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.