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Finding the Fourth Proportional to 6,881.20, 10,305.60 and 6,881.20

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Solution

The fourth proportional to 6,881.20, 10,305.60 and 6,881.20 is: 10,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,881.20 : 10,305.60 = 6,881.20 : x
  2. Step 2: Convert to fraction form
    6,881.20/10,305.60 = 6,881.20/x
  3. Step 3: Cross multiply
    6,881.20x = 10,305.60 × 6,881.20
  4. Step 4: Simplify right side
    6,881.20x = 70,914,894.72
  5. Step 5: Solve for x
    x = 70,914,894.72/6,881.20
  6. Step 6: Final answer
    x = 10,305.60

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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.