Home / 1,781.16-2,668.86-1,456.68

Finding the Fourth Proportional to 1,781.16, 2,668.86 and 1,456.68

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Solution

The fourth proportional to 1,781.16, 2,668.86 and 1,456.68 is: 2,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.16 : 2,668.86 = 1,456.68 : x
  2. Step 2: Convert to fraction form
    1,781.16/2,668.86 = 1,456.68/x
  3. Step 3: Cross multiply
    1,781.16x = 2,668.86 × 1,456.68
  4. Step 4: Simplify right side
    1,781.16x = 3,887,674.98
  5. Step 5: Solve for x
    x = 3,887,674.98/1,781.16
  6. Step 6: Final answer
    x = 2,182.66

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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.