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Finding the Fourth Proportional to 6,898.76, 9,520.20 and 3,754.88

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Solution

The fourth proportional to 6,898.76, 9,520.20 and 3,754.88 is: 5,181.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,898.76 : 9,520.20 = 3,754.88 : x
  2. Step 2: Convert to fraction form
    6,898.76/9,520.20 = 3,754.88/x
  3. Step 3: Cross multiply
    6,898.76x = 9,520.20 × 3,754.88
  4. Step 4: Simplify right side
    6,898.76x = 35,747,208.58
  5. Step 5: Solve for x
    x = 35,747,208.58/6,898.76
  6. Step 6: Final answer
    x = 5,181.69

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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.