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Finding the Fourth Proportional to 6,261.14, 8,639.90 and 3,427.90

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Solution

The fourth proportional to 6,261.14, 8,639.90 and 3,427.90 is: 4,730.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.14 : 8,639.90 = 3,427.90 : x
  2. Step 2: Convert to fraction form
    6,261.14/8,639.90 = 3,427.90/x
  3. Step 3: Cross multiply
    6,261.14x = 8,639.90 × 3,427.90
  4. Step 4: Simplify right side
    6,261.14x = 29,616,713.21
  5. Step 5: Solve for x
    x = 29,616,713.21/6,261.14
  6. Step 6: Final answer
    x = 4,730.24

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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.