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Finding the Fourth Proportional to 7,099.65, 9,797.42 and 4,115.48

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Solution

The fourth proportional to 7,099.65, 9,797.42 and 4,115.48 is: 5,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099.65 : 9,797.42 = 4,115.48 : x
  2. Step 2: Convert to fraction form
    7,099.65/9,797.42 = 4,115.48/x
  3. Step 3: Cross multiply
    7,099.65x = 9,797.42 × 4,115.48
  4. Step 4: Simplify right side
    7,099.65x = 40,321,047.36
  5. Step 5: Solve for x
    x = 40,321,047.36/7,099.65
  6. Step 6: Final answer
    x = 5,679.30

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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.