Home / 1,436.20-2,153.36-613.94

Finding the Fourth Proportional to 1,436.20, 2,153.36 and 613.94

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Solution

The fourth proportional to 1,436.20, 2,153.36 and 613.94 is: 920.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.20 : 2,153.36 = 613.94 : x
  2. Step 2: Convert to fraction form
    1,436.20/2,153.36 = 613.94/x
  3. Step 3: Cross multiply
    1,436.20x = 2,153.36 × 613.94
  4. Step 4: Simplify right side
    1,436.20x = 1,322,033.84
  5. Step 5: Solve for x
    x = 1,322,033.84/1,436.20
  6. Step 6: Final answer
    x = 920.51

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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.