Home / 2,923.74-4,035.90-1,979.07

Finding the Fourth Proportional to 2,923.74, 4,035.90 and 1,979.07

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Solution

The fourth proportional to 2,923.74, 4,035.90 and 1,979.07 is: 2,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,923.74 : 4,035.90 = 1,979.07 : x
  2. Step 2: Convert to fraction form
    2,923.74/4,035.90 = 1,979.07/x
  3. Step 3: Cross multiply
    2,923.74x = 4,035.90 × 1,979.07
  4. Step 4: Simplify right side
    2,923.74x = 7,987,328.61
  5. Step 5: Solve for x
    x = 7,987,328.61/2,923.74
  6. Step 6: Final answer
    x = 2,731.89

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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.