Home / 3,930.47-5,423.09-2,494.31

Finding the Fourth Proportional to 3,930.47, 5,423.09 and 2,494.31

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Solution

The fourth proportional to 3,930.47, 5,423.09 and 2,494.31 is: 3,441.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.47 : 5,423.09 = 2,494.31 : x
  2. Step 2: Convert to fraction form
    3,930.47/5,423.09 = 2,494.31/x
  3. Step 3: Cross multiply
    3,930.47x = 5,423.09 × 2,494.31
  4. Step 4: Simplify right side
    3,930.47x = 13,526,887.41
  5. Step 5: Solve for x
    x = 13,526,887.41/3,930.47
  6. Step 6: Final answer
    x = 3,441.54

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1.5x scale

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.