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Finding the Fourth Proportional to 6,898.78, 9,520.23 and 3,754.96

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Solution

The fourth proportional to 6,898.78, 9,520.23 and 3,754.96 is: 5,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,898.78 : 9,520.23 = 3,754.96 : x
  2. Step 2: Convert to fraction form
    6,898.78/9,520.23 = 3,754.96/x
  3. Step 3: Cross multiply
    6,898.78x = 9,520.23 × 3,754.96
  4. Step 4: Simplify right side
    6,898.78x = 35,748,082.84
  5. Step 5: Solve for x
    x = 35,748,082.84/6,898.78
  6. Step 6: Final answer
    x = 5,181.80

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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.