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Finding the Fourth Proportional to 6,891.76, 10,331.34 and 2,994.76

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Solution

The fourth proportional to 6,891.76, 10,331.34 and 2,994.76 is: 4,489.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.76 : 10,331.34 = 2,994.76 : x
  2. Step 2: Convert to fraction form
    6,891.76/10,331.34 = 2,994.76/x
  3. Step 3: Cross multiply
    6,891.76x = 10,331.34 × 2,994.76
  4. Step 4: Simplify right side
    6,891.76x = 30,939,883.78
  5. Step 5: Solve for x
    x = 30,939,883.78/6,891.76
  6. Step 6: Final answer
    x = 4,489.40

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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.