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Finding the Fourth Proportional to 6,898.15, 9,520.11 and 4,247.11

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Solution

The fourth proportional to 6,898.15, 9,520.11 and 4,247.11 is: 5,861.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,898.15 : 9,520.11 = 4,247.11 : x
  2. Step 2: Convert to fraction form
    6,898.15/9,520.11 = 4,247.11/x
  3. Step 3: Cross multiply
    6,898.15x = 9,520.11 × 4,247.11
  4. Step 4: Simplify right side
    6,898.15x = 40,432,885.55
  5. Step 5: Solve for x
    x = 40,432,885.55/6,898.15
  6. Step 6: Final answer
    x = 5,861.41

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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.