Home / 3,106.80-4,287.38-1,709.54

Finding the Fourth Proportional to 3,106.80, 4,287.38 and 1,709.54

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Solution

The fourth proportional to 3,106.80, 4,287.38 and 1,709.54 is: 2,359.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.80 : 4,287.38 = 1,709.54 : x
  2. Step 2: Convert to fraction form
    3,106.80/4,287.38 = 1,709.54/x
  3. Step 3: Cross multiply
    3,106.80x = 4,287.38 × 1,709.54
  4. Step 4: Simplify right side
    3,106.80x = 7,329,447.61
  5. Step 5: Solve for x
    x = 7,329,447.61/3,106.80
  6. Step 6: Final answer
    x = 2,359.16

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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.