Home / 3,107.20-4,288.14-1,709.92

Finding the Fourth Proportional to 3,107.20, 4,288.14 and 1,709.92

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Solution

The fourth proportional to 3,107.20, 4,288.14 and 1,709.92 is: 2,359.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.20 : 4,288.14 = 1,709.92 : x
  2. Step 2: Convert to fraction form
    3,107.20/4,288.14 = 1,709.92/x
  3. Step 3: Cross multiply
    3,107.20x = 4,288.14 × 1,709.92
  4. Step 4: Simplify right side
    3,107.20x = 7,332,376.35
  5. Step 5: Solve for x
    x = 7,332,376.35/3,107.20
  6. Step 6: Final answer
    x = 2,359.80

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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.