Home / 1,240.85-1,858.61-1,168.16

Finding the Fourth Proportional to 1,240.85, 1,858.61 and 1,168.16

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Solution

The fourth proportional to 1,240.85, 1,858.61 and 1,168.16 is: 1,749.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240.85 : 1,858.61 = 1,168.16 : x
  2. Step 2: Convert to fraction form
    1,240.85/1,858.61 = 1,168.16/x
  3. Step 3: Cross multiply
    1,240.85x = 1,858.61 × 1,168.16
  4. Step 4: Simplify right side
    1,240.85x = 2,171,147.48
  5. Step 5: Solve for x
    x = 2,171,147.48/1,240.85
  6. Step 6: Final answer
    x = 1,749.72

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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.