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Finding the Fourth Proportional to 6,428.22, 8,855.08 and 5,480.93

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Solution

The fourth proportional to 6,428.22, 8,855.08 and 5,480.93 is: 7,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.22 : 8,855.08 = 5,480.93 : x
  2. Step 2: Convert to fraction form
    6,428.22/8,855.08 = 5,480.93/x
  3. Step 3: Cross multiply
    6,428.22x = 8,855.08 × 5,480.93
  4. Step 4: Simplify right side
    6,428.22x = 48,534,015.65
  5. Step 5: Solve for x
    x = 48,534,015.65/6,428.22
  6. Step 6: Final answer
    x = 7,550.15

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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.