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Finding the Fourth Proportional to 6,407.97, 8,786.54 and 5,775.94

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Solution

The fourth proportional to 6,407.97, 8,786.54 and 5,775.94 is: 7,919.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,407.97 : 8,786.54 = 5,775.94 : x
  2. Step 2: Convert to fraction form
    6,407.97/8,786.54 = 5,775.94/x
  3. Step 3: Cross multiply
    6,407.97x = 8,786.54 × 5,775.94
  4. Step 4: Simplify right side
    6,407.97x = 50,750,527.85
  5. Step 5: Solve for x
    x = 50,750,527.85/6,407.97
  6. Step 6: Final answer
    x = 7,919.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.