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Finding the Fourth Proportional to 6,429.95, 8,872.13 and 3,776.39

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Solution

The fourth proportional to 6,429.95, 8,872.13 and 3,776.39 is: 5,210.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,429.95 : 8,872.13 = 3,776.39 : x
  2. Step 2: Convert to fraction form
    6,429.95/8,872.13 = 3,776.39/x
  3. Step 3: Cross multiply
    6,429.95x = 8,872.13 × 3,776.39
  4. Step 4: Simplify right side
    6,429.95x = 33,504,559.77
  5. Step 5: Solve for x
    x = 33,504,559.77/6,429.95
  6. Step 6: Final answer
    x = 5,210.71

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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.