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Finding the Fourth Proportional to 6,425.62, 8,867.69 and 3,907.32

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Solution

The fourth proportional to 6,425.62, 8,867.69 and 3,907.32 is: 5,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,425.62 : 8,867.69 = 3,907.32 : x
  2. Step 2: Convert to fraction form
    6,425.62/8,867.69 = 3,907.32/x
  3. Step 3: Cross multiply
    6,425.62x = 8,867.69 × 3,907.32
  4. Step 4: Simplify right side
    6,425.62x = 34,648,902.49
  5. Step 5: Solve for x
    x = 34,648,902.49/6,425.62
  6. Step 6: Final answer
    x = 5,392.30

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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.