Home / 3,930.79-5,424.48-2,252.17

Finding the Fourth Proportional to 3,930.79, 5,424.48 and 2,252.17

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Solution

The fourth proportional to 3,930.79, 5,424.48 and 2,252.17 is: 3,107.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.79 : 5,424.48 = 2,252.17 : x
  2. Step 2: Convert to fraction form
    3,930.79/5,424.48 = 2,252.17/x
  3. Step 3: Cross multiply
    3,930.79x = 5,424.48 × 2,252.17
  4. Step 4: Simplify right side
    3,930.79x = 12,216,851.12
  5. Step 5: Solve for x
    x = 12,216,851.12/3,930.79
  6. Step 6: Final answer
    x = 3,107.99

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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.