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Finding the Fourth Proportional to 7,808.15, 10,772.21 and 4,975.02

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Solution

The fourth proportional to 7,808.15, 10,772.21 and 4,975.02 is: 6,863.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.15 : 10,772.21 = 4,975.02 : x
  2. Step 2: Convert to fraction form
    7,808.15/10,772.21 = 4,975.02/x
  3. Step 3: Cross multiply
    7,808.15x = 10,772.21 × 4,975.02
  4. Step 4: Simplify right side
    7,808.15x = 53,591,906.33
  5. Step 5: Solve for x
    x = 53,591,906.33/7,808.15
  6. Step 6: Final answer
    x = 6,863.59

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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.