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Finding the Fourth Proportional to 6,139.68, 9,209.84 and 1,757.79

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Solution

The fourth proportional to 6,139.68, 9,209.84 and 1,757.79 is: 2,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.68 : 9,209.84 = 1,757.79 : x
  2. Step 2: Convert to fraction form
    6,139.68/9,209.84 = 1,757.79/x
  3. Step 3: Cross multiply
    6,139.68x = 9,209.84 × 1,757.79
  4. Step 4: Simplify right side
    6,139.68x = 16,188,955.86
  5. Step 5: Solve for x
    x = 16,188,955.86/6,139.68
  6. Step 6: Final answer
    x = 2,636.78

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1.5x scale

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.