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Finding the Fourth Proportional to 3,079.16, 4,250.63 and 1,961.63

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Solution

The fourth proportional to 3,079.16, 4,250.63 and 1,961.63 is: 2,707.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.16 : 4,250.63 = 1,961.63 : x
  2. Step 2: Convert to fraction form
    3,079.16/4,250.63 = 1,961.63/x
  3. Step 3: Cross multiply
    3,079.16x = 4,250.63 × 1,961.63
  4. Step 4: Simplify right side
    3,079.16x = 8,338,146.98
  5. Step 5: Solve for x
    x = 8,338,146.98/3,079.16
  6. Step 6: Final answer
    x = 2,707.93

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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.