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Finding the Fourth Proportional to 6,986.43, 10,485.90 and 6,244.86

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Solution

The fourth proportional to 6,986.43, 10,485.90 and 6,244.86 is: 9,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.43 : 10,485.90 = 6,244.86 : x
  2. Step 2: Convert to fraction form
    6,986.43/10,485.90 = 6,244.86/x
  3. Step 3: Cross multiply
    6,986.43x = 10,485.90 × 6,244.86
  4. Step 4: Simplify right side
    6,986.43x = 65,482,977.47
  5. Step 5: Solve for x
    x = 65,482,977.47/6,986.43
  6. Step 6: Final answer
    x = 9,372.88

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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.