Home / 5,280.93-7,921.46-1,385.73

Finding the Fourth Proportional to 5,280.93, 7,921.46 and 1,385.73

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Solution

The fourth proportional to 5,280.93, 7,921.46 and 1,385.73 is: 2,078.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.93 : 7,921.46 = 1,385.73 : x
  2. Step 2: Convert to fraction form
    5,280.93/7,921.46 = 1,385.73/x
  3. Step 3: Cross multiply
    5,280.93x = 7,921.46 × 1,385.73
  4. Step 4: Simplify right side
    5,280.93x = 10,976,997.84
  5. Step 5: Solve for x
    x = 10,976,997.84/5,280.93
  6. Step 6: Final answer
    x = 2,078.61

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1.5x scale

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.