Home / 6,639.08-9,161.76-3,654.80

Finding the Fourth Proportional to 6,639.08, 9,161.76 and 3,654.80

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Solution

The fourth proportional to 6,639.08, 9,161.76 and 3,654.80 is: 5,043.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.08 : 9,161.76 = 3,654.80 : x
  2. Step 2: Convert to fraction form
    6,639.08/9,161.76 = 3,654.80/x
  3. Step 3: Cross multiply
    6,639.08x = 9,161.76 × 3,654.80
  4. Step 4: Simplify right side
    6,639.08x = 33,484,400.45
  5. Step 5: Solve for x
    x = 33,484,400.45/6,639.08
  6. Step 6: Final answer
    x = 5,043.53

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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.