Home / 5,176.12-7,764.14-1,280.54

Finding the Fourth Proportional to 5,176.12, 7,764.14 and 1,280.54

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Solution

The fourth proportional to 5,176.12, 7,764.14 and 1,280.54 is: 1,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.12 : 7,764.14 = 1,280.54 : x
  2. Step 2: Convert to fraction form
    5,176.12/7,764.14 = 1,280.54/x
  3. Step 3: Cross multiply
    5,176.12x = 7,764.14 × 1,280.54
  4. Step 4: Simplify right side
    5,176.12x = 9,942,291.84
  5. Step 5: Solve for x
    x = 9,942,291.84/5,176.12
  6. Step 6: Final answer
    x = 1,920.80

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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.