Home / 3,107.97-4,289.56-1,782.10

Finding the Fourth Proportional to 3,107.97, 4,289.56 and 1,782.10

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Solution

The fourth proportional to 3,107.97, 4,289.56 and 1,782.10 is: 2,459.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.97 : 4,289.56 = 1,782.10 : x
  2. Step 2: Convert to fraction form
    3,107.97/4,289.56 = 1,782.10/x
  3. Step 3: Cross multiply
    3,107.97x = 4,289.56 × 1,782.10
  4. Step 4: Simplify right side
    3,107.97x = 7,644,425.78
  5. Step 5: Solve for x
    x = 7,644,425.78/3,107.97
  6. Step 6: Final answer
    x = 2,459.62

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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.