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Finding the Fourth Proportional to 4,257.28, 6,425.91 and 4,257.28

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Solution

The fourth proportional to 4,257.28, 6,425.91 and 4,257.28 is: 6,425.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,257.28 : 6,425.91 = 4,257.28 : x
  2. Step 2: Convert to fraction form
    4,257.28/6,425.91 = 4,257.28/x
  3. Step 3: Cross multiply
    4,257.28x = 6,425.91 × 4,257.28
  4. Step 4: Simplify right side
    4,257.28x = 27,356,900.84
  5. Step 5: Solve for x
    x = 27,356,900.84/4,257.28
  6. Step 6: Final answer
    x = 6,425.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.