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Finding the Fourth Proportional to 1,256.54, 1,744.92 and 1,244.39

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Solution

The fourth proportional to 1,256.54, 1,744.92 and 1,244.39 is: 1,728.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.54 : 1,744.92 = 1,244.39 : x
  2. Step 2: Convert to fraction form
    1,256.54/1,744.92 = 1,244.39/x
  3. Step 3: Cross multiply
    1,256.54x = 1,744.92 × 1,244.39
  4. Step 4: Simplify right side
    1,256.54x = 2,171,352.27
  5. Step 5: Solve for x
    x = 2,171,352.27/1,256.54
  6. Step 6: Final answer
    x = 1,728.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.