Home / 1,242.36-1,860.86-1,169.66

Finding the Fourth Proportional to 1,242.36, 1,860.86 and 1,169.66

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Solution

The fourth proportional to 1,242.36, 1,860.86 and 1,169.66 is: 1,751.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242.36 : 1,860.86 = 1,169.66 : x
  2. Step 2: Convert to fraction form
    1,242.36/1,860.86 = 1,169.66/x
  3. Step 3: Cross multiply
    1,242.36x = 1,860.86 × 1,169.66
  4. Step 4: Simplify right side
    1,242.36x = 2,176,558.36
  5. Step 5: Solve for x
    x = 2,176,558.36/1,242.36
  6. Step 6: Final answer
    x = 1,751.95

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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.