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Finding the Fourth Proportional to 6,881.96, 10,320.96 and 2,720.36

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Solution

The fourth proportional to 6,881.96, 10,320.96 and 2,720.36 is: 4,079.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,881.96 : 10,320.96 = 2,720.36 : x
  2. Step 2: Convert to fraction form
    6,881.96/10,320.96 = 2,720.36/x
  3. Step 3: Cross multiply
    6,881.96x = 10,320.96 × 2,720.36
  4. Step 4: Simplify right side
    6,881.96x = 28,076,726.75
  5. Step 5: Solve for x
    x = 28,076,726.75/6,881.96
  6. Step 6: Final answer
    x = 4,079.76

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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.