Home / 5,177.61-7,767.72-1,480.15

Finding the Fourth Proportional to 5,177.61, 7,767.72 and 1,480.15

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Solution

The fourth proportional to 5,177.61, 7,767.72 and 1,480.15 is: 2,220.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.61 : 7,767.72 = 1,480.15 : x
  2. Step 2: Convert to fraction form
    5,177.61/7,767.72 = 1,480.15/x
  3. Step 3: Cross multiply
    5,177.61x = 7,767.72 × 1,480.15
  4. Step 4: Simplify right side
    5,177.61x = 11,497,431.94
  5. Step 5: Solve for x
    x = 11,497,431.94/5,177.61
  6. Step 6: Final answer
    x = 2,220.61

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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.