Home / 1,928.28-2,890.14-1,107.12

Finding the Fourth Proportional to 1,928.28, 2,890.14 and 1,107.12

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Solution

The fourth proportional to 1,928.28, 2,890.14 and 1,107.12 is: 1,659.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.28 : 2,890.14 = 1,107.12 : x
  2. Step 2: Convert to fraction form
    1,928.28/2,890.14 = 1,107.12/x
  3. Step 3: Cross multiply
    1,928.28x = 2,890.14 × 1,107.12
  4. Step 4: Simplify right side
    1,928.28x = 3,199,731.80
  5. Step 5: Solve for x
    x = 3,199,731.80/1,928.28
  6. Step 6: Final answer
    x = 1,659.37

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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.