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Finding the Fourth Proportional to 7,099.92, 9,797.36 and 3,955.50

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Solution

The fourth proportional to 7,099.92, 9,797.36 and 3,955.50 is: 5,458.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,099.92 : 9,797.36 = 3,955.50 : x
  2. Step 2: Convert to fraction form
    7,099.92/9,797.36 = 3,955.50/x
  3. Step 3: Cross multiply
    7,099.92x = 9,797.36 × 3,955.50
  4. Step 4: Simplify right side
    7,099.92x = 38,753,437.70
  5. Step 5: Solve for x
    x = 38,753,437.70/7,099.92
  6. Step 6: Final answer
    x = 5,458.29

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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.