Home / 3,930.60-5,423.13-2,438.58

Finding the Fourth Proportional to 3,930.60, 5,423.13 and 2,438.58

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Solution

The fourth proportional to 3,930.60, 5,423.13 and 2,438.58 is: 3,364.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.60 : 5,423.13 = 2,438.58 : x
  2. Step 2: Convert to fraction form
    3,930.60/5,423.13 = 2,438.58/x
  3. Step 3: Cross multiply
    3,930.60x = 5,423.13 × 2,438.58
  4. Step 4: Simplify right side
    3,930.60x = 13,224,736.36
  5. Step 5: Solve for x
    x = 13,224,736.36/3,930.60
  6. Step 6: Final answer
    x = 3,364.56

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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.