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Finding the Fourth Proportional to 9,794.80, 13,516.60 and 5,318.50

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Solution

The fourth proportional to 9,794.80, 13,516.60 and 5,318.50 is: 7,339.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,794.80 : 13,516.60 = 5,318.50 : x
  2. Step 2: Convert to fraction form
    9,794.80/13,516.60 = 5,318.50/x
  3. Step 3: Cross multiply
    9,794.80x = 13,516.60 × 5,318.50
  4. Step 4: Simplify right side
    9,794.80x = 71,888,037.10
  5. Step 5: Solve for x
    x = 71,888,037.10/9,794.80
  6. Step 6: Final answer
    x = 7,339.41

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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.