Home / 3,106.87-4,287.69-1,709.62

Finding the Fourth Proportional to 3,106.87, 4,287.69 and 1,709.62

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Solution

The fourth proportional to 3,106.87, 4,287.69 and 1,709.62 is: 2,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.87 : 4,287.69 = 1,709.62 : x
  2. Step 2: Convert to fraction form
    3,106.87/4,287.69 = 1,709.62/x
  3. Step 3: Cross multiply
    3,106.87x = 4,287.69 × 1,709.62
  4. Step 4: Simplify right side
    3,106.87x = 7,330,320.58
  5. Step 5: Solve for x
    x = 7,330,320.58/3,106.87
  6. Step 6: Final answer
    x = 2,359.39

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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.