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Finding the Fourth Proportional to 4,900.05, 6,761.87 and 2,661.87

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Solution

The fourth proportional to 4,900.05, 6,761.87 and 2,661.87 is: 3,673.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,900.05 : 6,761.87 = 2,661.87 : x
  2. Step 2: Convert to fraction form
    4,900.05/6,761.87 = 2,661.87/x
  3. Step 3: Cross multiply
    4,900.05x = 6,761.87 × 2,661.87
  4. Step 4: Simplify right side
    4,900.05x = 17,999,218.90
  5. Step 5: Solve for x
    x = 17,999,218.90/4,900.05
  6. Step 6: Final answer
    x = 3,673.27

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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.