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Finding the Fourth Proportional to 9,880.00, 13,639.36 and 7,636.81

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Solution

The fourth proportional to 9,880.00, 13,639.36 and 7,636.81 is: 10,542.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,880.00 : 13,639.36 = 7,636.81 : x
  2. Step 2: Convert to fraction form
    9,880.00/13,639.36 = 7,636.81/x
  3. Step 3: Cross multiply
    9,880.00x = 13,639.36 × 7,636.81
  4. Step 4: Simplify right side
    9,880.00x = 104,161,147.65
  5. Step 5: Solve for x
    x = 104,161,147.65/9,880.00
  6. Step 6: Final answer
    x = 10,542.63

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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.