Home / 1,269.41-1,749.15-1,186.61

Finding the Fourth Proportional to 1,269.41, 1,749.15 and 1,186.61

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Solution

The fourth proportional to 1,269.41, 1,749.15 and 1,186.61 is: 1,635.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.41 : 1,749.15 = 1,186.61 : x
  2. Step 2: Convert to fraction form
    1,269.41/1,749.15 = 1,186.61/x
  3. Step 3: Cross multiply
    1,269.41x = 1,749.15 × 1,186.61
  4. Step 4: Simplify right side
    1,269.41x = 2,075,558.88
  5. Step 5: Solve for x
    x = 2,075,558.88/1,269.41
  6. Step 6: Final answer
    x = 1,635.06

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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.