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Finding the Fourth Proportional to 1,788.65, 2,468.47 and 1,080.68

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Solution

The fourth proportional to 1,788.65, 2,468.47 and 1,080.68 is: 1,491.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,788.65 : 2,468.47 = 1,080.68 : x
  2. Step 2: Convert to fraction form
    1,788.65/2,468.47 = 1,080.68/x
  3. Step 3: Cross multiply
    1,788.65x = 2,468.47 × 1,080.68
  4. Step 4: Simplify right side
    1,788.65x = 2,667,613.82
  5. Step 5: Solve for x
    x = 2,667,613.82/1,788.65
  6. Step 6: Final answer
    x = 1,491.41

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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.