Home / 1,780.38-2,668.58-609.29

Finding the Fourth Proportional to 1,780.38, 2,668.58 and 609.29

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Solution

The fourth proportional to 1,780.38, 2,668.58 and 609.29 is: 913.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,780.38 : 2,668.58 = 609.29 : x
  2. Step 2: Convert to fraction form
    1,780.38/2,668.58 = 609.29/x
  3. Step 3: Cross multiply
    1,780.38x = 2,668.58 × 609.29
  4. Step 4: Simplify right side
    1,780.38x = 1,625,935.01
  5. Step 5: Solve for x
    x = 1,625,935.01/1,780.38
  6. Step 6: Final answer
    x = 913.25

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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.