Home / 3,107.39-4,288.58-1,928.63

Finding the Fourth Proportional to 3,107.39, 4,288.58 and 1,928.63

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Solution

The fourth proportional to 3,107.39, 4,288.58 and 1,928.63 is: 2,661.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.39 : 4,288.58 = 1,928.63 : x
  2. Step 2: Convert to fraction form
    3,107.39/4,288.58 = 1,928.63/x
  3. Step 3: Cross multiply
    3,107.39x = 4,288.58 × 1,928.63
  4. Step 4: Simplify right side
    3,107.39x = 8,271,052.96
  5. Step 5: Solve for x
    x = 8,271,052.96/3,107.39
  6. Step 6: Final answer
    x = 2,661.74

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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.