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Finding the Fourth Proportional to 9,839.60, 14,749.80 and 8,802.80

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Solution

The fourth proportional to 9,839.60, 14,749.80 and 8,802.80 is: 13,195.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,839.60 : 14,749.80 = 8,802.80 : x
  2. Step 2: Convert to fraction form
    9,839.60/14,749.80 = 8,802.80/x
  3. Step 3: Cross multiply
    9,839.60x = 14,749.80 × 8,802.80
  4. Step 4: Simplify right side
    9,839.60x = 129,839,539.44
  5. Step 5: Solve for x
    x = 129,839,539.44/9,839.60
  6. Step 6: Final answer
    x = 13,195.61

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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.