Home / 1,251.48-1,738.80-1,236

Finding the Fourth Proportional to 1,251.48, 1,738.80 and 1,236

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Solution

The fourth proportional to 1,251.48, 1,738.80 and 1,236 is: 1,717.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.48 : 1,738.80 = 1,236 : x
  2. Step 2: Convert to fraction form
    1,251.48/1,738.80 = 1,236/x
  3. Step 3: Cross multiply
    1,251.48x = 1,738.80 × 1,236
  4. Step 4: Simplify right side
    1,251.48x = 2,149,156.80
  5. Step 5: Solve for x
    x = 2,149,156.80/1,251.48
  6. Step 6: Final answer
    x = 1,717.29

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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.