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Finding the Fourth Proportional to 3,257.46, 4,886.99 and 917.46

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Solution

The fourth proportional to 3,257.46, 4,886.99 and 917.46 is: 1,376.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,257.46 : 4,886.99 = 917.46 : x
  2. Step 2: Convert to fraction form
    3,257.46/4,886.99 = 917.46/x
  3. Step 3: Cross multiply
    3,257.46x = 4,886.99 × 917.46
  4. Step 4: Simplify right side
    3,257.46x = 4,483,617.85
  5. Step 5: Solve for x
    x = 4,483,617.85/3,257.46
  6. Step 6: Final answer
    x = 1,376.42

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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.