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Finding the Fourth Proportional to 2,351.70, 3,245.27 and 1,356.84

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Solution

The fourth proportional to 2,351.70, 3,245.27 and 1,356.84 is: 1,872.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,351.70 : 3,245.27 = 1,356.84 : x
  2. Step 2: Convert to fraction form
    2,351.70/3,245.27 = 1,356.84/x
  3. Step 3: Cross multiply
    2,351.70x = 3,245.27 × 1,356.84
  4. Step 4: Simplify right side
    2,351.70x = 4,403,305.36
  5. Step 5: Solve for x
    x = 4,403,305.36/2,351.70
  6. Step 6: Final answer
    x = 1,872.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.