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Finding the Fourth Proportional to 6,419.92, 9,629.94 and 2,037.40

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Solution

The fourth proportional to 6,419.92, 9,629.94 and 2,037.40 is: 3,056.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.92 : 9,629.94 = 2,037.40 : x
  2. Step 2: Convert to fraction form
    6,419.92/9,629.94 = 2,037.40/x
  3. Step 3: Cross multiply
    6,419.92x = 9,629.94 × 2,037.40
  4. Step 4: Simplify right side
    6,419.92x = 19,620,039.76
  5. Step 5: Solve for x
    x = 19,620,039.76/6,419.92
  6. Step 6: Final answer
    x = 3,056.12

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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.