Home / 4,900.80-7,349.89-2,126.82

Finding the Fourth Proportional to 4,900.80, 7,349.89 and 2,126.82

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Solution

The fourth proportional to 4,900.80, 7,349.89 and 2,126.82 is: 3,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.80 : 7,349.89 = 2,126.82 : x
  2. Step 2: Convert to fraction form
    4,900.80/7,349.89 = 2,126.82/x
  3. Step 3: Cross multiply
    4,900.80x = 7,349.89 × 2,126.82
  4. Step 4: Simplify right side
    4,900.80x = 15,631,893.05
  5. Step 5: Solve for x
    x = 15,631,893.05/4,900.80
  6. Step 6: Final answer
    x = 3,189.66

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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.