Home / 6,639.10-9,161.78-3,654.94

Finding the Fourth Proportional to 6,639.10, 9,161.78 and 3,654.94

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Solution

The fourth proportional to 6,639.10, 9,161.78 and 3,654.94 is: 5,043.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.10 : 9,161.78 = 3,654.94 : x
  2. Step 2: Convert to fraction form
    6,639.10/9,161.78 = 3,654.94/x
  3. Step 3: Cross multiply
    6,639.10x = 9,161.78 × 3,654.94
  4. Step 4: Simplify right side
    6,639.10x = 33,485,756.19
  5. Step 5: Solve for x
    x = 33,485,756.19/6,639.10
  6. Step 6: Final answer
    x = 5,043.72

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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.