Home / 3,106.28-4,286.64-1,709

Finding the Fourth Proportional to 3,106.28, 4,286.64 and 1,709

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Solution

The fourth proportional to 3,106.28, 4,286.64 and 1,709 is: 2,358.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.28 : 4,286.64 = 1,709 : x
  2. Step 2: Convert to fraction form
    3,106.28/4,286.64 = 1,709/x
  3. Step 3: Cross multiply
    3,106.28x = 4,286.64 × 1,709
  4. Step 4: Simplify right side
    3,106.28x = 7,325,867.76
  5. Step 5: Solve for x
    x = 7,325,867.76/3,106.28
  6. Step 6: Final answer
    x = 2,358.41

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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.