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Finding the Fourth Proportional to 6,379.76, 8,796.12 and 5,265.20

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Solution

The fourth proportional to 6,379.76, 8,796.12 and 5,265.20 is: 7,259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,379.76 : 8,796.12 = 5,265.20 : x
  2. Step 2: Convert to fraction form
    6,379.76/8,796.12 = 5,265.20/x
  3. Step 3: Cross multiply
    6,379.76x = 8,796.12 × 5,265.20
  4. Step 4: Simplify right side
    6,379.76x = 46,313,331.02
  5. Step 5: Solve for x
    x = 46,313,331.02/6,379.76
  6. Step 6: Final answer
    x = 7,259.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.