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Finding the Fourth Proportional to 5,257.78, 7,895.60 and 3,513.99

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Solution

The fourth proportional to 5,257.78, 7,895.60 and 3,513.99 is: 5,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,257.78 : 7,895.60 = 3,513.99 : x
  2. Step 2: Convert to fraction form
    5,257.78/7,895.60 = 3,513.99/x
  3. Step 3: Cross multiply
    5,257.78x = 7,895.60 × 3,513.99
  4. Step 4: Simplify right side
    5,257.78x = 27,745,059.44
  5. Step 5: Solve for x
    x = 27,745,059.44/5,257.78
  6. Step 6: Final answer
    x = 5,276.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.