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Finding the Fourth Proportional to 3,493.70, 5,240.55 and 896.66

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Solution

The fourth proportional to 3,493.70, 5,240.55 and 896.66 is: 1,344.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,493.70 : 5,240.55 = 896.66 : x
  2. Step 2: Convert to fraction form
    3,493.70/5,240.55 = 896.66/x
  3. Step 3: Cross multiply
    3,493.70x = 5,240.55 × 896.66
  4. Step 4: Simplify right side
    3,493.70x = 4,698,991.56
  5. Step 5: Solve for x
    x = 4,698,991.56/3,493.70
  6. Step 6: Final answer
    x = 1,344.99

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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.