Home / 2,923.79-4,387.65-1,279.38

Finding the Fourth Proportional to 2,923.79, 4,387.65 and 1,279.38

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Solution

The fourth proportional to 2,923.79, 4,387.65 and 1,279.38 is: 1,919.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,923.79 : 4,387.65 = 1,279.38 : x
  2. Step 2: Convert to fraction form
    2,923.79/4,387.65 = 1,279.38/x
  3. Step 3: Cross multiply
    2,923.79x = 4,387.65 × 1,279.38
  4. Step 4: Simplify right side
    2,923.79x = 5,613,471.66
  5. Step 5: Solve for x
    x = 5,613,471.66/2,923.79
  6. Step 6: Final answer
    x = 1,919.93

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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.