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Finding the Fourth Proportional to 9,806.40, 14,709.60 and 8,834.40

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Solution

The fourth proportional to 9,806.40, 14,709.60 and 8,834.40 is: 13,251.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,806.40 : 14,709.60 = 8,834.40 : x
  2. Step 2: Convert to fraction form
    9,806.40/14,709.60 = 8,834.40/x
  3. Step 3: Cross multiply
    9,806.40x = 14,709.60 × 8,834.40
  4. Step 4: Simplify right side
    9,806.40x = 129,950,490.24
  5. Step 5: Solve for x
    x = 129,950,490.24/9,806.40
  6. Step 6: Final answer
    x = 13,251.60

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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.