Home / 3,945.84-5,920.76-2,389.56

Finding the Fourth Proportional to 3,945.84, 5,920.76 and 2,389.56

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Solution

The fourth proportional to 3,945.84, 5,920.76 and 2,389.56 is: 3,585.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.84 : 5,920.76 = 2,389.56 : x
  2. Step 2: Convert to fraction form
    3,945.84/5,920.76 = 2,389.56/x
  3. Step 3: Cross multiply
    3,945.84x = 5,920.76 × 2,389.56
  4. Step 4: Simplify right side
    3,945.84x = 14,148,011.27
  5. Step 5: Solve for x
    x = 14,148,011.27/3,945.84
  6. Step 6: Final answer
    x = 3,585.55

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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.