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Finding the Fourth Proportional to 6,679.79, 10,019.57 and 1,999.83

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Solution

The fourth proportional to 6,679.79, 10,019.57 and 1,999.83 is: 2,999.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,679.79 : 10,019.57 = 1,999.83 : x
  2. Step 2: Convert to fraction form
    6,679.79/10,019.57 = 1,999.83/x
  3. Step 3: Cross multiply
    6,679.79x = 10,019.57 × 1,999.83
  4. Step 4: Simplify right side
    6,679.79x = 20,037,426.67
  5. Step 5: Solve for x
    x = 20,037,426.67/6,679.79
  6. Step 6: Final answer
    x = 2,999.71

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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.