Home / 2,374.78-3,561.06-1,279.66

Finding the Fourth Proportional to 2,374.78, 3,561.06 and 1,279.66

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Solution

The fourth proportional to 2,374.78, 3,561.06 and 1,279.66 is: 1,918.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,374.78 : 3,561.06 = 1,279.66 : x
  2. Step 2: Convert to fraction form
    2,374.78/3,561.06 = 1,279.66/x
  3. Step 3: Cross multiply
    2,374.78x = 3,561.06 × 1,279.66
  4. Step 4: Simplify right side
    2,374.78x = 4,556,946.04
  5. Step 5: Solve for x
    x = 4,556,946.04/2,374.78
  6. Step 6: Final answer
    x = 1,918.89

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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.