Home / 1,965.86-2,712.53-1,169.45

Finding the Fourth Proportional to 1,965.86, 2,712.53 and 1,169.45

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Solution

The fourth proportional to 1,965.86, 2,712.53 and 1,169.45 is: 1,613.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.86 : 2,712.53 = 1,169.45 : x
  2. Step 2: Convert to fraction form
    1,965.86/2,712.53 = 1,169.45/x
  3. Step 3: Cross multiply
    1,965.86x = 2,712.53 × 1,169.45
  4. Step 4: Simplify right side
    1,965.86x = 3,172,162.36
  5. Step 5: Solve for x
    x = 3,172,162.36/1,965.86
  6. Step 6: Final answer
    x = 1,613.63

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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.