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Finding the Fourth Proportional to 9,410.40, 14,115.60 and 8,389.80

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Solution

The fourth proportional to 9,410.40, 14,115.60 and 8,389.80 is: 12,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,410.40 : 14,115.60 = 8,389.80 : x
  2. Step 2: Convert to fraction form
    9,410.40/14,115.60 = 8,389.80/x
  3. Step 3: Cross multiply
    9,410.40x = 14,115.60 × 8,389.80
  4. Step 4: Simplify right side
    9,410.40x = 118,427,060.88
  5. Step 5: Solve for x
    x = 118,427,060.88/9,410.40
  6. Step 6: Final answer
    x = 12,584.70

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Similar ratio
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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.