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Finding the Fourth Proportional to 6,261, 8,639.82 and 3,428.37

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Solution

The fourth proportional to 6,261, 8,639.82 and 3,428.37 is: 4,730.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261 : 8,639.82 = 3,428.37 : x
  2. Step 2: Convert to fraction form
    6,261/8,639.82 = 3,428.37/x
  3. Step 3: Cross multiply
    6,261x = 8,639.82 × 3,428.37
  4. Step 4: Simplify right side
    6,261x = 29,620,499.69
  5. Step 5: Solve for x
    x = 29,620,499.69/6,261
  6. Step 6: Final answer
    x = 4,730.95

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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.