Home / 3,787.40-5,668.14-3,139.40

Finding the Fourth Proportional to 3,787.40, 5,668.14 and 3,139.40

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Solution

The fourth proportional to 3,787.40, 5,668.14 and 3,139.40 is: 4,698.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.40 : 5,668.14 = 3,139.40 : x
  2. Step 2: Convert to fraction form
    3,787.40/5,668.14 = 3,139.40/x
  3. Step 3: Cross multiply
    3,787.40x = 5,668.14 × 3,139.40
  4. Step 4: Simplify right side
    3,787.40x = 17,794,558.72
  5. Step 5: Solve for x
    x = 17,794,558.72/3,787.40
  6. Step 6: Final answer
    x = 4,698.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.